the answer is A.Explanation:
How does the amount of rainfall affect the amount and types of seeds present on the Galapagos Islands?
Select the correct answer.
What term describes a species whose removal would affect many other species, both directly and indirectly
A. predator species
B. Keystone species
OC. cascading species
OD. phoresy species
Next
Answer:
Keystone species
Explanation:
Keystone species is that species whose presence and number in the ecosystem plays an important role in balancing the ecosystem and without them, the other species would be affected directly and indirectly.
A dominant predator is considered to be a keystone species because the removal of that predator allow their prey to explode in numbers which will decrease the overall biodiversity of the area. Prairie dogs, otters, bison are the examples of keystone species. So the correct answer is B. Key stone species.
How many alleles for one trait are normally found in the genotype for an organism
Answer:
2
Explanation:
PLEASE HELP Compounds that always contain the element carbon are called
Which of the following occur in a maple tree growing in a temperate climate in response to increasing cold weather? Choose three correct
answers.
A. Auxin production stimulate one final growth spurt before winter arrives,
B. The chlorophyll in the leaves break down, revealing yellow and red pigments that had been masked by the green pigments.
C. Xylem and phloem fill with ions and organic substances that prevent freezing.
D. Meristems form thick scales to protect next year's buds from cold winter temperatures,
Answer: Option A, C and D.
Explanation:
Cold temperature affects plants that cannot adapt to it and can eventually lead to their deaths.
If the temperature, and therefore the metabolism, remain low for an extended period, plant quality will suffer, and death may occur. A period of cold weather may also alter plant growth, as when certain vegetables “bolt,” or produce seed stalks, in response to several days at low temperatures
But maple plants in temperate region has develop some characteristics or adaptions that help its survive cold temperatures. Maple plants can tolerate frost and light freezes for short duration because they are cool plants and development characteristics to do so.
Auxins in them stimulate one final spurt before winter. Their xylems and phloems are filled with ions that prevent freezing.
They have a thick meristems which form thick scales to protect next year's buds from cold winter temperatures,
Joey eats strawberries for lunch. Explain how homeostasis is maintained in the endocrine systems once the fruit has entered Joey’s body.
Answer:
Explanations:
Homeostasis can be defined as the phenomenon whereby there is balance or stability within the internal and external environment of a cell or the body. The internal environment of the organism is kept constant during homeostasis. During this process there is adjustments in the
internal environment Because there is always change in the conditions inside and outside the cell. When the system of the body is able to adjust itself it's reffered to as homeostatic regulation.
The endocrine system which contains glands that is responsible for the secretion of hormones into the bloodstream play also vital part during Homeostasis, This is because hormones which are the chemical messaged effect some change cells in another part of the body. The endocrine system is responsible for the regulations of
metabolism as well as the development of some body cells and systems via feedback mechanisms, hormones such as
Thyrotropin-Releasing Hormone during Homeostasis. Therefore as Joey eats strawberries for lunch the hormones makes adjustment of muscle metabolism and also regulate fluid and ion concentration in the system or body
New Deal Agency
Goal
Reduce unemployment
Works Progress Administration
Social Security Administration
Prevent poverty among the elderly
Federal Deposit Insurance
Corporation
Protect citizens from bank failures
?
Securities and Exchange
Commission
Which item best completes the chart?
A. Provide nutritious food for the unemployed
B. Ensure mortgages against economic recession
C. Protect again future economic crises
D. Promote foreign trade for American businesses
Answer: Protect against future economic crises
Explanation:
New Deal Agency in which unemployment is reduced and Social Security Administration prevents poverty among the elderly, protects against future economic crises again, hence option c is correct.
What is New Deal Agency?The Social Security Administration was founded in 1935 as a separate organization. Its main responsibilities were for public assistance, unemployment insurance, and old-age insurance.
Payroll taxes help to support Social Security, it covers medical expenses, medication, and in some situations, a stipend for the elderly, with New Deal Agency.
Therefore, protection from future crises in the New Deal Agency for Social Security completes the chart, hence option c is correct.
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Sleet is precipitation made of small particles of ice. How does sleet form?
Answer:
Sleet is pellets of ice that form when snow falls into a warm layer and melts into rain. The rain then falls into a freezing layer of air that is deep enough to refreeze the raindrops into pellets. Sometimes the snow does not completely melt and the partially melted snowflakes refreeze into snow pellets.:
hope this helps!
Answer:
There must be a layer of air near the ground whose temperature is below freezing, where water turns to ice. Above this layer of freezing air must be a layer of warmer air. As snow falls through the warm air, it melts or partially melts into raindrops. It forms sleet before it reaches the ground.
Explanation:
:3
Physical characteristics include 3 pairs of legs and 3 body sections *
arachnids
insects
annelids
echinoderms
Answer:
The three main features of an arthropod's body are the _ or cuticle made of chitin; a series of paired, jointed _ , and segmented _ parts. A long organic molecule made of sugars, arranged in layers. Chitin.
Explanation:
Answer:
Which of the following equations are balanced correctly?
2Ag2O → 4Ag + O2
Zn + HCl → ZnCl2 + H2
Cu + H2O → CuO + H2
2C4H10 + 13O2 → 8CO2 + 10H2O
Explanation:
Which of the following is an autotroph in the food web below?
Fill in the blank. Giraffe necks and mice necks have the same number of vertebrae, despite their different sizes and functions. This is an example of a(n) _______. The wings of insects, bats, and birds are structurally different but achieve similar functions. This is an example of a/an _______. The peppered moth provides an example of _______, as the predominant color of moths changed over time as pollution dictated which color was best camouflaged for protection from predators. Respond to the following based on your reading. Two species, a cactus and a Venus fly-trap, have a water intake system that's similar in function but not in structure. What type of structure is this? A scientist is trying to determine if two species are closely related or if they just have the same external features. What would you look for to make this determination? You go to school and discover that your friend got admitted to the hospital for a burst appendix. You want to learn if the appendix serves a function in our bodies. What would you need to research? A species of beetle in Africa looks really similar to a different species in South America. How would the environment influence species development? Why does Australia have so many genetically distinct organisms?
Answer:
homologous structure
analogous structure
natural selection
This is known as an analogous structure.
To make this determination, you need to think about if the features are the same in function or also in structure. Features that have a closely related structure and function are likely to be related.
To learn more about why your friend is in the hospital, you should research vestigial structures.
These two beetles aren't closely related, but they look and behave similarly. This is because they live in the same environmental conditions and likely share a common ancestor that lived in Gondwana (the supercontinent that included the southern continents before they split apart through plate tectonics).
Australia has so many genetically distinct organisms because it has been separated from other bodies of land by water for a very long time. This has created an opportunity for long-term independence of other geographic areas.
Explanation:
Penn Foster
Answer:
1. homologous structure
2. analogous structure
3. natural selection
4. This is known as an analogous structure.
5. To make this determination, you need to think about if the features are the same in function or also in structure. Features that have a closely related structure and function are likely to be related.
6. To learn more about why your friend is in the hospital, you should research vestigial structures.
7. These two beetles aren't closely related, but they look and behave similarly. This is because they live in the same environmental conditions and likely share a common ancestor that lived in Gondwana (the supercontinent that included the southern continents before they split apart through plate tectonics).
8. Australia has so many genetically distinct organisms because it has been separated from other bodies of land by water for a very long time. This has created an opportunity for long-term independence of other geographic areas.
quick i have 6 MINUTES!!!!!!!!!!!!!
Answer:
6.D and 7.A
Explanation:
help me please
help help help
Answer:
I am pretty sure they use a fuel source, since they are connected to a electric grid that uses coal and other fuel.
An ecosystem that has almost the same number and type of organisms for many years is exhibiting ___
Answer:
equilibrium
Explanation:
You create a punnett square to determine the probability of hair color being passed to
offspring. Brown hair is dominant. Blond hair is recessive. Both parents have brown hair.
Both parents are heterozygous. What is the probability that the offspring will also have
brown hair?
ofteprings Brown hair to de
Answer:
75%, or 3/4's
Explanation:
Parent's genotypes are Bb because they are homozygous & brown hair is dominant. Cross this, and you get the genotypes of the offspring: BB, Bb, Bb, and bb. The proability that offspring will also have brown hair is 3 out of these 4 genotypes, so 75%.
during a lunar eclipse, what occurs?
Answer:
the sun gets behind the moon
Explanation:
Answer:
the moon moves into the earth's shadow, so no sunlight reaches the moon. This only happens when the sun, earth and the moon are in line with each other.
How do animals respond to stimuli?
Please help this is my last assignment for the year
How do the activities of squirrels affect oak trees?
A.
They cause the trees to produce acorns during the winter.
B.
They make it more difficult for the tree to reproduce.
C.
By removing acorns, their behavior causes harm to the trees
D.
They help the trees reproduce more successfully
Answer:
I want to say it is
They help the trees reproduce more successfully
Explanation:
this is because the others do not make sence
In which part of the nephron does the filtration of blood occur?
Answer: Glomerulus
Explanation:
The force of the Earth's gravity on an object gives the object its __________.
volume
mass
weight
density
Answer:
weight
Explanation:
The gravitational force between a mass and the Earth is the object's weight.
Answer:
Weight
Explanation:
Whe weight of an object is the force of gravity on the object and may be defined as a mass times the acceleration of gravity,w=mg.Since the weight is a force,its SI unit is the newton.
A substance valued or required by any organism(s) for survival is defined as a ____
Answer: resource
Explanation:
A substance valued or required by any living organism(s) for survival is defined as a resource.
What is living organism ?The environment consist of both living and nonliving organisms with two interacting components such as Physical or abiotic and biological or biotic components.
The physical component are temperature, light, soil, air, and water where as the biological component are animals, plants, and microorganisms.
The biotic components are plants, animals, and micro-organisms while green leaves of the autotrophic plant have chlorophyll and this pigment help in making food using light, water, and carbon dioxide by the process of photosynthesis.
Animals on the other hand are heterotrophs need nutrients and absorb nutrients such as nitrogen, phosphorus, and calcium from the soil.
Decomposer and Scavengers feed on the dead bodies and decaying substances, animal release the nutrients trapped inside them.
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Example of how organisms that were previously thought of as related are actually more genetically related to organisms outside their species?
Answer:
Explanation:
Examples includes the relationships between chimpanzees, gorillas and humans. It is actually believed that the chimpanzees are more closely related to humans. About 99% of ther genome is thought similar to humans while for the gorillas about 98%.
But then, it is thought that chimpanzees and gorillas should be closely related to each other than to humans, but comparison of their genomes has shown that across 15% of the gorillas genome, they share a closer relationship with humans than with chimpanzees.
Which level of organization is shown in the image?
a
cell
b
organ system
С
tissue
D
organ
Answer:
where is the picture? I can try and help
1. Chargaff’s rule states that the amount of _______ in DNA is always roughly equal to the amount of thymine, and that the amount of guanine in DNA is always roughly equal to the amount of cytosine.
2. The outside of the DNA double helix is made of alternating groups of deoxyribose sugars and _______.
3. The DNA double helix is _______, meaning that the two strands run in opposite directions.
4. What's x-ray crystallography?
5. Explain how Rosalind Franklin's x-ray crystallography work helped Watson and Crick in their quest to determine the physical structure of DNA.
6. What did Watson, Crick, and Franklin discover about the structure of DNA?
7. How did Watson, Crick, and Franklin's work reiterate Chargaff's findings?
1. adenine
2. phosphates
3. antiparallel
4. X-ray crystallography is a technique used to learn more about the three-dimensional structure of biological molecules. In x-ray crystallography, a molecule (for example, DNA) is crystallized. Then, x-ray beams are directed onto the molecular crystal. The pattern of diffraction, or bending, of the x-rays provides information about the physical properties of the molecule. Rosalind Franklin used x-ray crystallography to investigate the three-dimensional structure of DNA.
5. Watson and Crick were interested in learning more about the physical structure of DNA. They had come up with several hypotheses about how DNA could be structured, but they needed more concrete evidence of the molecule's structure. Rosalind Franklin's Photo 51 provided important information to Watson and Crick as they worked on a model of the three-dimensional structure of DNA.
6. Photo 51 confirmed that DNA is a double helix. Watson and Crick's model of DNA included that it is antiparallel, and that each base pair is held together by hydrogen bonds. The DNA chain is comprised of an outer backbone alternating between the sugar deoxyribose and phosphate groups. The base pairs, which are held together by hydrogen bonds, are located on the inner portion of the double helix.
7. Chargaff found that the number of adenine nucleotides was always roughly the same as the number of thymines, and the number of cytosines was about the same as the number of guanines. This provided the insight that in the DNA double helix, A selectively bonds with T, while G bonds with C. This explains why Chargaff consistently found that the number of As and Ts, and the number of Cs and Gs, were the same in his studies.
Answer:
adenine
phosphates
antiparallel
X-ray crystallography is a technique used to learn more about the three-dimensional structure of biological molecules. In x-ray crystallography, a molecule (for example, DNA) is crystallized. Then, x-ray beams are directed onto the molecular crystal. The pattern of diffraction, or bending, of the x-rays provides information about the physical properties of the molecule. Rosalind Franklin used x-ray crystallography to investigate the three-dimensional structure of DNA.
Watson and Crick were interested in learning more about the physical structure of DNA. They had come up with several hypotheses about how DNA could be structured, but they needed more concrete evidence of the molecule's structure. Rosalind Franklin's Photo 51 provided important information to Watson and Crick as they worked on a model of the three-dimensional structure of DNA.
Photo 51 confirmed that DNA is a double helix. Watson and Crick's model of DNA included that it is antiparallel, and that each base pair is held together by hydrogen bonds. The DNA chain is comprised of an outer backbone alternating between the sugar deoxyribose and phosphate groups. The base pairs, which are held together by hydrogen bonds, are located on the inner portion of the double helix.
Chargaff found that the number of adenine nucleotides was always roughly the same as the number of thymines, and the number of cytosines was about the same as the number of guanines. This provided the insight that in the DNA double helix, A selectively bonds with T, while G bonds with C. This explains why Chargaff consistently found that the number of As and Ts, and the number of Cs and Gs, were the same in his studies.
Explanation:
this is the answer Pennfoster gave me
appendix: doesn't really do.............for us but it does for other organisms
Answer:
Hey!
The blank space you've left open is meant to be filled with the word ANYTHING...
Explanation:
It has a history of acknowledging its little purpose and significance...but only really comes into focus when it is infected...called APPENDICITIS...
HOPE THIS HELPS!!
ItsMATT15Which substance cannot be separated by physical means or chemical means?
A: Mixture
B: Compound
C: Solution
D: Element
Answer:
I think its D
Explanation:
..........
Answer:
D: Element
Is the answer...
18. The Environmental Defense Fund, The Friends of the Earth, and The Natural Defense Council, (1 point)
are all divisions of The Environmental Protection Agency.
True
False
*PLEASE HELP*
somebody please help me
Answer: B
Explanation:
• Nerve cells (neurons) carry the message from the stimulated receptors to the correct effectors.
• A sensory neuron carries the message from the receptor to the central nervous system (the spinal cord and brain).
• A motor neuron carries the message from the central nervous system to the effector.
• This is a reflex arc.
Deserts are only found near the equator.
Please select the best answer from the choices provided
T
F
Answer:
False
Explanation:
Answer:
False
Explanation:
Many deserts are not located around the equator with the most common example of this being the Gobi desert. Some books even contain the information that the Arctic and the Antarctic are deserts as well and they are located on the poles.
How does the experiment contribute to our understanding of altruism in different creatures?
Answer:
TWO YEARS AGO, a group of Ugandan chimps provided a blow to the idea that humans are the only animals that truly behave selflessly to one another. These chimps showed clear signs of true selflessness, helping both human handlers and other unrelated chimps with no desire for reward.
The question of why we help each other, instead of looking out for ourselves, is one of the most compelling in modern biology. Evolutionary and game theory alike predict that selfish behaviour should be the rule with altruism the exception, and animal experiments have largely supported this idea. Nature, ‘red in tooth and claw’, is painted as a fierce competition between selfish individuals and their even more selfish genes. In this stark landscape, true altruism is apparently a rare quality and some scientists believe that it’s one
Explanation:
Answer:
TWO YEARS AGO, a group of Ugandan chimps provided a blow to the idea that humans are the only animals that truly behave selflessly to one another. These chimps showed clear signs of true selflessness, helping both human handlers and other unrelated chimps with no desire for reward.
The question of why we help each other, instead of looking out for ourselves, is one of the most compelling in modern biology. Evolutionary and game theory alike predict that selfish behaviour should be the rule with altruism the exception, and animal experiments have largely supported this idea. Nature, ‘red in tooth and claw’, is painted as a fierce competition between selfish individuals and their even more selfish genes. In this stark landscape, true altruism is apparently a rare quality and some scientists believe that it’s one
Explanation:
