you are leading an effort to reduce the formation of a dead zone in the gulf of mexico during the summer. You are tasked with selecting which company should be hired to help treat water runoff in the area. you provide both companies with identical samples of the water to be treated. the table below shows the results. to which company do you award the contract and why
A) I would chose company 1 because they decreased metals the least, and metal kill microbes
B) I would choose company 1 because they reduced nitrate and phosphate fertilizers the most and these fertilizers contribute to the dead zone formation
C) I would chose company 2 because they decreased the nitrate and phosphate fertilizer the least and these are important for plant growth and algae growth
D) I would choose company 2 because they reduced metals the most and metals are the most harmful contamination of the listed
Answers
Answer:
B) I would choose company 1 because they reduce nitrate and phosphate fertilizers the most.
Explanation:
Dead zones begin to form when excess nutrients such as phosphorus and nitrogen enter coastal waters and help the growth of an organism called cyanobacteria, or blue-green algae. With too much nutrients the algae takes up most of the oxygen in the water, leaving other organisms with less oxygen, killing them. Fertilizers would be the main reason for a dead zone to form. Therefore, Company 1 would be the most suitable as they reduced the concentration of fertilizers in the water the most.
Related Questions
In mri, structural information about the brain can be collected by using strong magnetic fields together with radio waves to manipulate the nuclear _______________ of protons.
Answers
none of the answers in this list of options fills the blank. Strong magnetic fields created by the powerful magnets used in MRIs compel the body's protons to align with the field.
The protons are activated and spin out of equilibrium when a radiofrequency current is then pulsed through the patient, struggling against the magnetic field's pull.Because protons can spin either left or right, which corresponds to a distinct energy state, they have multiple spin configurations. Higher energy states are experienced by protons that align against the external magnetic field as opposed to lower energy states experienced by protons that do so.The hydrogen protons will align themselves once more with the static magnetic field once the energy from the RF pulse is lost. Hydrogen protons serve as the source of the MRI signal since they move back into alignment with the magnetic field, and fall out of "phase" with each other.DISCLAIMER
In MRI, structural information about the brain can be collected by using strong magnetic fields together with radio waves to manipulate the nuclear _______________ of protons.
electron
mass
none of the answers in this list of options
charge
number
learn more about MRI here:
https://brainly.com/question/16007706
#SPJ4
The disruption of a joint in which the bone ends are no longer in contact is called a?
Answers
The disruption of a joint in which the bone ends are no longer in contact is called a Dislocation.
What is dislocation of bone?When two bones separate where they meet at a joint, it is called a dislocation. The joint may be momentarily deformed and immobilized, and the injury may be excruciatingly painful. Shoulders and fingers are the most frequent sites for dislocations, although they can also happen in the elbows, knees, and hips. The cause is frequently a fall or blow, occasionally while participating in a contact sport. A bone slipping out of a joint is known as a dislocation. For instance, the shoulder is home to a joint where the top of your arm bone fits. You have a dislocated shoulder when it jumps out of that joint or slips out of it. Any joint in your body, whether your knee, hip, ankle, or shoulder, is susceptible to dislocation.
To learn more about dislocation from the given link:
https://brainly.com/question/3787309
#SPJ4
Classify invertebrates in this table with all the correct information.
Answers
The invertebrates from the table above is correctly classified below:
Invertebrates Phylum
Anemones Cnidaria
Butterfly Arthropoda
Clam Mollusca
Coral Cnidaria
Crab Arthropoda
Earthworm Annelida
Grasshoppers Arthropoda
Hydra Cnidaria
Jellyfish Cnidaria
Lobster Arthropoda
Mussel Mollusca
Nematode Nematoda
Octopus Mollusca
Planaria Platyhelminthes
Scorpion Arthropoda
Grasshoppers are invertebrates which belong to the phylum Arthropoda
Classification of grasshopper:
Phylum: Arthropoda
Sub-phylum: Hexapoda
Class: Insecta
Body symmetry: Bilateral symmetry
Characteristics: Below are some of the characteristics of grasshopper
They have three body regionsThey posses three pairs of legsThey have one pair antennaeTracheal system is presentWhat are invertebrates?Invertebrates are animals without backbone.
Below are some invertebrate phyla:
PoriferaCnidaria or coelentrataAnnelidaNematodaEchinodermataMolluscaArthropodaLearn more about invertebrates:
https://brainly.com/question/21332744
#SPJ1
The primary symptoms of _________________ are muscular rigidity, slowness of movement, a resting tremor, and postural instability
Answers
The primary symptoms of Parkinson's disease are muscular rigidity, slowness of movement, a resting tremor, and postural instability.
What are the causes of Parkinson’s disease?Parkinson's disease is a disorder of the central nervous system which results in unintended movements like uncontrolled shaking, stiffness, and difficulty to coordinate and balance.This is caused due to damage of nerve cells in the basal ganglia of brain which leads to decrease in levels of dopamine (a neurotransmitter).Nerve endings that release norepinephrine also get damaged.Initially the symptoms are mild which gradually worsen as the disease progresses.It leads to behavioral changes, fatigue, sleep disorders, depression.This disease can be controlled by taking medications which increase the level of dopamine and other neurotransmitters and by performing therapies which control body movements.Learn more about Parkinson’s disease here:
https://brainly.com/question/5126740
#SPJ4
When a neurotransmitter causes the opening of chemically gated potassium channels on the postsynaptic cell, the postsynaptic potential that results is an_______.
Answers
A Final statement or concluding statement
When a neurotransmitter causes the opening of chemically gated potassium channels on the postsynaptic cell, the postsynaptic potential that results is an inhibitory postsynaptic potential (IPSP), which is a hyper polarization
What causes postsynaptic potential?Graded potentials are a feature of postsynaptic potentials. Neurotransmitters from the terminal bouton at the end of an axon are released into the synaptic cleft by the presynaptic neuron, which causes these reactions.
What is IPSP?An inhibitory postsynaptic potential (IPSP) is a type of synaptic potential that decreases the likelihood that an action potential will be produced by a postsynaptic neuron. The IPSP lowers the membrane potential of neurons and increases the likelihood that an action potential won't occur.
To learn more about Drug Abuse from the given link
https://brainly.com/question/14530959
#SPJ4
What is a geostrophic wind? Why would you not expect to observe a geostrophic wind at the equator?
Answers
A theoretical wind known as the geostrophic wind is produced when the Coriolis effect, as well as the pressure difference forces, are balanced (PGF). It is a decent estimate for the wind reported at middle latitudes at an altitude of greater than 1 km. Given that there is no Coriolis effect near the equator, there can be no geostrophic wind.
What does "geostrophic wind" mean?
Geostrophic flow, as used in atmospheric research, is the fictitious wind that would emerge from a precise balancing act between the Coriolis effect and the pressure difference forces. The term "geostrophic equilibrium" or "geostrophic balance" refers to this situation (also known as geostrophy). Parallel to the isobars is where the geostrophic wind is pointed. In nature, this equilibrium seldom occurs perfectly. Because of these factors, the genuine wind and geostrophic wind nearly never match up.
The location of geostrophic winds:
At elevations exceeding 1000 meters (3300 feet), geostrophic wind can be found. With the use of weather balloons, the geostrophic wind velocity may be calculated. At heights up to 100 meters, the ground surface has a significant impact on winds.
Learn more about the Coriolis effect here:
https://brainly.com/question/14290551
#SPJ4
Select the correct answer. how does the heat content of the reaction change in the process of photosynthesis when a glucose molecule is formed? a. the value of q is negative b. the value of q is positive c. the value of q remains constant d. the value of q decreases e. the value of q equals zero
Answers
The correct option is, (B) the value of q is positive.
What is photosynthesis?It is a chemical process or reaction that occurs in green plants or living creatures. During this process, carbon dioxide combines with water in the presence of sunshine to produce glucose and oxygen.As we all know, photosynthesis cannot occur in the absence of sunshine. As a result, the photosynthesis reaction is an endothermic reaction in which energy or heat is supplied to the system. This implies that the value of 'q' will be positive. If the system produces heat, the value of 'q' is negative.To learn more about photosynthesis from the given link
https://brainly.com/question/12380974
#SPJ4
An ion that has two or more electrons outside the nucleus than there are protons in the nucleus will have a charge of:______
Answers
An ion that has two more electrons outside the nucleus than there are protons in the nucleus will have a -2 charge.
An atom or molecule with a net electrical charge is known as an ion. Conventionally, the charge of an electron is thought to be negative this charge is equal to and opposite to the charge of a proton, which is thought to be positive. These ions allow electrical messages to move freely throughout the body. Electrolytes are essential to the body because they control osmotic pressure in cells and support the health of muscle and nerve cells.
Protons dominate electrons in a positively charged ion or cation. The atomic number of the element is represented by the proton number, while the electron number is the atomic number less the charge. An anion or ion with a negative charge has more electrons than protons. The atomic number is once more equal to the number of protons.
To know more about ion refer to:
https://brainly.com/question/14511468
#SPJ4
The ________ duct empties into the vestibule at the level of the second upper molar. parotid vestibular submaxillary sublingual submandibular.
Answers
The parotid duct empties into the vestibule at the level of the second upper molar. Parotid vestibular submaxillary sublingual submandibula.
The upper second molar tooth's crown is direct across from the opening of the parotid duct, also known as Stensen's duct, which secretes serous saliva and enters the gingiva-buccal vestibule of the mouth. The parotid ducts typically exit near the maxillary second molars, and they can be felt as little bumps (papillae) on both sides of the mouth. At the sublingual caruncle, the Wharton duct, the primary excretory duct of the submandibular gland, empties into the oral cavity. The sublingual caruncle is a papilla that is situated lateral to the frenulum linguae and medial to the sublingual gland. A set of lymph nodes located in front of the ear is known as the superficial parotid lymph nodes. Learn more about parotid duct here brainly.com/question/24210088#SPJ4
Temperature and precipitation are the most important elements in describing a climate because ________.
Answers
Temperature and precipitation are considered important elements in describing a climate because they have the greatest influence on ecosystem and humans.
Fundamental climatic indicators that can have a significant impact on both ecosystems and human existence are air temperature and precipitation.For instance, rising air temperatures might result in more severe heat waves, which can be fatal and sicken vulnerable people. The quantity of water available for drinking, agriculture, and industry can be impacted by rainfall, snowfall, and the timing of snowmelt.
The kinds of animals and plants (including crops) that can thrive in specific places are also influenced by annual and seasonal variations in temperature and precipitation.
To learn more about precipitation click here
brainly.com/question/14687840
#SPJ4
What molecule(s) could diffuse across the plasma membrane? disaccharides fe2 tryptophan amino acid ch4
Answers
Methane CH4 molecule can diffuse across the plasma membrane . So the correct answer is CH4.
Passive diffusion is a nonselective mechanism that allows any molecule that can dissolve in the phospholipid bilayer to traverse the plasma membrane and establish equilibrium between the inside and outside of the cell. It's crucial to note that only tiny, mostly hydrophobic compounds can diffuse significantly through a phospholipid bilayer.
Gases (like O2 and CO2), hydrophobic substances (like benzene), and tiny polar but uncharged substances (like H2O and ethanol) can all diffuse across the plasma membrane as a result. However, some biological molecules cannot dissolve in the phospholipid bilayer's hydrophobic interior.
To learn more about passive diffusion click here
brainly.com/question/3420640
#SPJ4
Why did it take more generations of complete selection to reduce q from 0. 1 to 0. 01 (a 0. 09 change) compared that for a 0. 5 to 0. 1 reduction (a larger, 0. 4 change)? explain
Answers
Zygotic selection against dominant alleles is more efficient than selection against recessive alleles. It can take fewer than 100 generations to eliminate a dominate delterious allele with an initial frequency of 0.70.
According to hardy- Weinberg equilibrium scientist have observe at-least two generation. Allele frequencies are the same for both generations then the population is in the Hardy- Weinberg equilibrium. The frequency of heterogeneous individuals are equal to 2pq.
In case of 2pq equals 0.32 which means that the frequency of individuals heterozygous for this gene is equal to the 32%. Hardy- Weinberg equation is , p=the frequency of dominant allele in a population.q= frequency of recessive allele in a population.
To learn more about hardy- Weinberg equilibrium here
https://brainly.com/question/16823644
#SPJ4
Which group behavior is most commonly observed in
insects?
A. Flocking
B. Herding
C. Hunting
D. Swarming
Answers
Answer:
Swarming is most commonly observed.
The correct answer is D. Swarming.
Explanation:The behavior of gregarious insects, also known as swarming, is most commonly associated with social insects that live in communal colonies. Although, the behavior has also been observed among non-social insects as well.
Hope this helps :)
In radioactive dating, the measure scientists use to note how long (on average) a particular radioactive nucleus will take to decay is called its?
Answers
Half- Life
in radioactive dating scientists use to note how long
Jill takes her children to play in the park every afternoon. she notices that since the city changed their landscaping service, the pond in the center of the park is now covered with algae. what is the most probable cause?
Answers
Excessive application of fertilizer
The reason for the pond in the center of the park to now be covered with algae is the excessive application of fertilizer.
A plant can really die from too much fertilizer, and excess fertilizer can cause toxic algal blooms in lakes and streams that are dangerous to people and their pets as well as other aquatic life. Aquatic "dead zones" are also a result of excessive fertilizer runoff from agricultural and lawn applications in coastal areas.What consequences might excessive fertilizer use have?By increasing the soil's salt concentration, excessive fertilizer changes the soil and might harm beneficial soil microbes. Over-fertilization can result in abrupt plant growth with insufficient roots to provide the plant with enough water and nutrients.Can plants bounce back after excessive fertilizing?A few straightforward procedures can save the majority of over fertilized plants. Remove any fertilizer that is readily visible from the soil and plant, and let water pass through the roots to leach the fertilizer away. After that, take out any damaged foliage and give your plant another meal after about a month.
To learn more about excessive usage of fertilizers visit:
https://brainly.com/question/27963554
#SPJ4
An example of a eukaryotic cell would
be...
A. an animal cell.
B. a virus.
C. a bacterial cell.
Answers
Answer: A animal cell
Explanation:
Explanation:
Eukaryotes contain a distinct, membrane bound nucleus
- virus is not a cell, so it’s neither a prokaryote or eukaryote
- bacterial cells lack a nucleus and membrane bound organelles
Therefore, the answer is A
What is comorbidity?
a. co-occurrence of two disorders
b. having two causes for a single disorder
c. having two causes of death
d. mental disorder leading to death
Answers
a. co-occurrence of two disorders
What is comorbidity?
Comorbidity refers to more than one illness or disease that is occurring in one person at the same time while on the other hand, multimorbidity is defined as more than two illnesses or diseases that is occurring in the same person at the same time means one person has three, four or more diseases at the same time. In this Comorbidity condition, a patient is suffering from two disease at the same time due to many factors.
So we can conclude that option A is the right answer.
Learn more about illness here: https://brainly.com/question/933852
#SPJ1
In sexual reproduction, exactly what egg cell matures and what sperm cell fertilizes the egg is:_________
Answers
Answer:
acrosome
Explanation:
not sure but yeaaaaa i think its right tho
The tissue that makes up the spinal cord and brain consists of Multiple Choice neurons only. platelets and neuroglia. platelets only. neurons and platelets. neurons and neuroglia.
Answers
The brain and spinal cord are composed of neurons and neuroglia.
The central nervous system consists of the brain and spinal cord which is made of nervous tissue.
The nervous tissue comprises neuron and neuroglia cells. Neurons are cells that can transmit signals through action potential. There are three types of the neuronal present in the CNS. They are sensory neurons, motor neurons and interneurons.
The neuroglial cells are the supporting cells which possess many specialized functions to support, protect and nourish neurons.
There are six types of neuroglia cells present in the CNS. They are astrocytes, microglial cells, ependymal cells, oligodendrocytes, satellite cells and schwann cells.
Learn more about Neurons and neuroglia on
https://brainly.com/question/5755608
#SPJ1
What is most likely to happen to an abandoned strip mine over time? a. the strip mine is likely to completely recover over time. b. the strip mine is likely to remain exactly as it is left when abandoned. c. the strip is likely to partly recover, but never return to its original state. d. the strip mine is likely to become a lake. please select the best answer from the choices provided a b c d
Answers
The strip is likely to partly recover, but never return to it's original state
The site can be partly recovered but cannot return to the original state in strip mining.
What do you mean by Mining ?The abandoned strip mining is a mining practice a seam of mineral is removed by the long strip of the overlying soil and rock.
This process is used for the mining purpose of the coal.After the mining procedure the soil will loose its fertility because only the parent rock will be left at the bottom and organic matter will be lost.As a result the soil will become loose and soil erosion will take place.Learn more about Mining here:
https://brainly.com/question/1278689
#SPJ4
When blood pressure increases, blood vessels supplying the kidney will ________ to mount a steady rate of filtration.
Answers
When blood pressure increases, blood vessels supplying the kidney will contract to mount a steady rate of filtration.
What is the primary function of urinary system?The urinary system helps to maintain homeostasis by changing the blood's composition, pH, volume, and pressure, maintaining blood osmolarity, eliminating wastes and foreign objects, and releasing hormones.After the kidneys have filtered the blood plasma, what happens?Most of the water and solutes are returned to the bloodstream by the kidneys after the kidneys have filtered the blood plasma.The discipline that examines kidney pathology, physiology, and anatomy is known as nephrology.
Na+, K+, Ca2+, Cl-, and Phosphate ions, which are produced by the kidneys, aid in controlling blood pressure during regulation of blood ionic composition.
To learn more about kidney visit:
https://brainly.com/question/2307335
#SPJ4
In our bodies, glucose is broken down into carbon dioxide and water, much like a combustion reaction. How many grams of o2 are needed to fully react with 150g glucose?
Answers
160g of O₂ will be required to fully react with 150g of glucose when glucose is broken down in our bodies to produce carbon dioxide and water.
The breakdown of glucose in our bodies can be represented by the following reaction:
C₆H₁₂O₆(s) + 6O₂(g) → 6CO₂(g) + 6H₂O(g)
As shown in the reaction, a mole of glucose reacts with 6 moles of oxygen.
To calculate the molecular mass:
1 mole of glucose (C₆H₁₂O₆) = (6x12) + (12x1) + (6x16) = 180g
6 moles of oxygen= 6x (2x16) = 192g
180g of glucose reacts with 192g of oxygen. So, to calculate the amount of oxygen required to fully react with 150g of glucose=
150 x 192/180 = 160g of oxygen.
Therefore, 160g of oxygen is required to fully react with 150g of glucose.
To learn more about glucose here
brainly.com/question/13855310
#SPJ4
The placenta is formed by endometrial tissue of the uterine lining and the ________
Answers
The placenta is formed by endometrial tissue of the uterine lining and the chorion, which is a membrane that surrounds the embryo and helps to form the placenta.
What is the placenta?The placenta is an organ that develops during pregnancy and connects the developing fetus to the uterine wall to allow for nutrient uptake, waste elimination, and gas exchange via the mother's blood supply.
The placenta also produces hormones that are important for pregnancy, such as human chorionic gonadotropin (hCG) and progesterone. It acts as a barrier, preventing the mother's immune system from attacking the developing fetus. The placenta is usually expelled from the mother's body after the baby is born.
Thus, the placenta is formed by endometrial tissue of the uterine lining and the chorion.
Learn more about the placenta, here:
https://brainly.com/question/31465707
#SPJ2
Which feature of insects has promoted their diversification and evolutionary success?
Answers
Insects has repeated modular segment that develop independently of each other promoted their diversification and evolutionary success. They are able to evolve appendage that are specialized for diverse functions.
Hypotheses propose that insect diversity either result form low extinction rates and resilience to mass extinctions and acquisition of key innovation that allowed them to radiate into newly formed niches.
There exoskeleton characteristics are commonly responsible for the diversification of insects on land. These insects are the amazing diversity in the surrounding , it believed that insects are so successful because they have protective shell /exoskeleton , they have small in size and they can fly.
To learn more about the insect diversity here
https://brainly.com/question/10756589
#SPJ4
Moving your finger across a textured surface can produce vibrations that are interpreted as texture. These vibrations are defined as?
Answers
Moving your finger across a textured surface can produce vibrations that are interpreted as texture. These vibrations are defined as temporal cues.
Temporal envelope (ENV) or temporal cues are changes in the amplitude and frequency of sound perceived by humans over time. These temporal changes are responsible for several aspects of auditory perception, including loudness, pitch and timbre perception and spatial hearing.
Complex sounds such as speech or music are decomposed by the peripheral auditory system of humans into narrow frequency bands. The resulting narrow-band signals convey information at different time scales ranging from less than one millisecond to hundreds of milliseconds. A dichotomy between slow "temporal envelope" cues and faster "temporal fine structure" cues has been proposed to study several aspects of auditory perception (e.g., loudness, pitch and timbre perception, auditory scene analysis, sound localization) at two distinct time scales in each frequency band.
Over the last decades, a wealth of psychophysical, electrophysiological and computational studies based on this envelope/fine-structure dichotomy have examined the role of these temporal cues in sound identification and communication, how these temporal cues are processed by the peripheral and central auditory system, and the effects of aging and cochlear damage on temporal auditory processing.
Although the envelope/fine-structure dichotomy has been debated and questions remain as to how temporal fine structure cues are actually encoded in the auditory system, these studies have led to a range of applications in various fields including speech and audio processing, clinical audiology and rehabilitation of sensorineural hearing loss via hearing aids or cochlear implants.
Learn more about Temporal envelope here : https://brainly.com/question/1004131
#SPJ4
What is the group of nutrients that build, repair, and maintain body cells? gavs
Answers
Protein is a group of nutrient nutrient used to make and repair our body cells.
The primary structural element of cells, protein, is in charge of maintaining and repairing bodily tissues. Amino acids, which serve as the basis for protein synthesis, are formed from protein.The primary structural element of cells, protein, is in charge of maintaining and repairing bodily tissues. Amino acids, which serve as the basis for protein synthesis, are formed from protein. Proteins do most of the work in cells and are required for the structure, function, and regulation of the body's tissues and organs.After working out, eating protein provides your muscles with the amino acids they need to recover and renew.learn more about Protein here: https://brainly.com/question/10058019
#SPJ4
........................
Answers
.........................
........
Calculate the mass in grams of 3.41 x 10^24 molecules of propylamine. The chemical formula for propylamine is C3,H9,N.
mass:
Answers
The mass of 3.41×10²⁴molecules of propylamine is 33.45 gms.
What is avogador's no. ?Avogadro's number, the number of units in one mole of any substance (defined as its molecular weight in grams), is equal to 6.02214076 × 10²³.
How to determine the molar mass of compound ?To this problem we first need to calculate the molar mass of the given compound. as follows:
3×12+1×9+1×14 = 59
In the next step, we simply apply the formula to calculate the mass of the compound. it is
No. of molecules ÷ Avogadro's no. × molar mass of the compound
3.41 x 10²⁴÷6.02×10²³×54= 33.43gms
Hence, the mass of 3.41×10²⁴molecules of propylamine is 33.45 gms.
Learn more about Avogadro's no. here: https://brainly.com/question/1581342
#SPJ1
• In your own words, discuss the role of each of the following structures in the whole process: cell membrane, vesicles (at two points in the process), ribosomes, Golgi apparatus, and endoplasmic reticulum
Answers
Answer:
1:to allow movement of small molecules in and out of cell
2
Which data would not affect maximum likelihood estimates of phylogenies when comparing different tree hypotheses?.
Answers
The tree topology
The lengths of the branches
The branching order of the tree
Nucleotide substitution rate
These would not affect maximum likelihood estimates of phylogenies when comparing different tree hypotheses.
What is tree topology?A unique kind of structure called a tree topology has numerous connected parts arranged like the branches of a tree. The lengths of the branches:Branch lengths are a sign of genetic divergence; the longer the branch, the more genetic divergence has taken place. Usually, we calculate the average number of nucleotide or protein substitutions per site to assess the degree of genetic alteration.The branching order of the tree:The topology of a tree refers to its branching structure. Species (or higher taxa), populations, genes, and proteins are examples of taxonomic units that the nodes represent. A branch is referred to as an edge, and it represents an estimate of the length of time between the evolutionary relationships between taxonomic units.What is nucleotide substitution rate?The instantaneous rate of change from each of the four nucleotides to each of the other four nucleotides is summarized in the nucleotide substitution rate matrix.To learn more about tree phylogeny visit:
https://brainly.com/question/8573900
#SPJ4
