There is uncertainty in science because of limited technology of the time.
Why there is uncertainty in science?Uncertainty is critical for science because it compels the scientists to engage in new investigation and research. It is very important to rather it means an absence of certainty in science which is okay because uncertainty of science leads to new investigations, experiments and researches. With the passage of time, our technology get advanced day by day which leads to new discoveries and inventions.
So we can conclude that there is uncertainty in science because of limited technology of the time.
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Choose any one of these properties of blood homeostasis to describe how and why substances in the blood and filtrate are secreted or reabsorbed.
Description:
The nephron uses the process of urine formation to maintain blood homeostases, such as pH balance, blood pressure, and osmotic pressure. Figure 1 shows the transport of substances between the filtrate in parts of the nephron and the blood in capillaries.
The substances in the blood are reabsorbed due to its usage in our body whereas the filtrate are secreted due to its harmful nature.
Describe how and why substances in the blood and filtrate are secreted or reabsorbed?The filtrate absorbed in the glomerulus and flows through the renal tubule, where nutrients and water are reabsorbed into capillaries that are used by the body in different processes. During this process, the waste and hydrogen ions pass from the capillaries into the renal tubule which is called secretion. Kidney is the organ where the absorption of nutrients and removal of waste from the blood occur.
So we can conclude that substances in the blood are reabsorbed due to its usage in our body whereas the filtrate are secreted due to its harmful nature.
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Which best explains the relationship between flying dragons and trees?
a.
Flying dragons rely on trees for a food source, but not for shelter.
b.
Flying dragons live exclusively in trees except to lay eggs.
c.
Flying dragons burrow into the tree without causing damage to the tree.
d.
Flying dragons use trees for reproduction, but get their food and shelter on the ground.
Please select the best answer from the choices provided
A
B
C
D
Answer:
b.
b.Flying dragons live exclusively in trees except to lay eggs.
What is an example of a Scope Three carbon emission?
Answer:
examples : when we buy,use and dispose of products from suppliers.
Which of the following are NOT criteria for the definition of a species? A. Produce fertile offspring B. Can Interbreed C. Share physiological characteristics D. Has the same DNA sequence
Answer:
C) Physical characteristics.
how does afforest station help to balance environment
Explanation:
The ever and ever increasing demand for wood fuel, gas, timber, building materials, and many other consumer products are exerting more and more pressure on the earth’s natural resources, living organisms, and natural cycles responsible for maintaining a balance on earth.
Natural resources such as the water systems, fertile soil, clean air, vegetation cover, wildlife, indigenous plant species, and natural cycles such as the oxygen and nitrogen cycles, and food chains need trees for their continuity and balance.
Explanation:
afforestation makes the earth a better place by reducing the carbon footprint or carbon dioxide in the atmosphere
Propose five ways in which the government can ensure that the help it offers is received only by the people who are in need?
As the Sustainable Development Goals (SDGs) were being approved in late 2015, my colleagues here at ODI delivered the Projecting Progress scorecard.
What are five ways the government can guarantee that the help it offers is obtained only by the people who are in need?By encouraging the need to create cooperatives throughwhich the country can be funding them.By working with the church to identify the weak in the society so that the required help can go to the right people.By forming commitees that should be glancing at the need in the community Ensure governments and supporters have a formal process to track, review and debate progress towards achieving the ‘leave no behind’ agenda. pretending to be needy.Prioritise policies that target those most at risk, orient financing towards them, and deliver better data
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In a community a species of birds has some individuals with a different size and others which statement correctly explains how physical differences in beaks would develop?
Physical differences in beaks of birds would develop as a result of different environmental changes.
What is Evolution?This is described as the process in which heritable characteristics are changed in species over successive generations. This occurs as a result of natural selection in which the traits suitable for survival are passed to the offspring.
This is usually as a result of a change in the environmental factors which ensures that the organisms are able to adapt so as not to die out and go extinct in this type of scenario.
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Select the correct answer from each drop-down menu.
L
The nervous system and the muscle system respond to stimuli to produce motion. The movements of
v muscles are mostly
voluntary. Involuntary movements occur in these muscles when the nerve impulse passes from a sensory neuron CO
motor neuron via
an interneuron in the
v
Reset
Next
The correct answer from the listed options is that the nervous system and the muscle system respond to stimuli to produce motion (option A).
What is nervous system?Nervous system is the organ system that coordinates the activities of muscles, monitors organs, constructs and processes data received from the senses and initiates actions.
On the other hand, the muscle is a contractile form of tissue which animals use to effect movement.
The nervous system controls the muscle, hence, it controls movement of limbs in higher organisms.
Therefore, the correct answer from the listed options is that the nervous system and the muscle system respond to stimuli to produce motion.
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Answer:
Explanation:skeletal
Spinal
A mass of cells that have lost all restraint in division and are piled on top of one another is called a _____
Answer:
A mass of cells that have lost all restraint in division and are piled on top of one another is called a Tumor.
Listening and hearing are essentially the same as both involve receiving aural and visual stimuli. True or false?.
It is a false statement that listening and hearing are essentially the same as both involve receiving aural and visual stimuli.
What is a stimuli?The term stimuli is used to describe any information that is received from the external environment. This information that has been received from the external environment must be interpreted by the nervous system of the individual. The interaction of an organism with it's environment tends to occur by the instrumentality of the sense organs present in the organism.
The term aural stimulus has to do with a sensation that is received by the ears while the term visual stimulus deals with the kind of sensation that is received with the ears.
Hence, it is a false statement that listening and hearing are essentially the same as both involve receiving aural and visual stimuli.
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What is gravity’s role in plate tectonics?
Answer:
Gravity causes them to slide downwards
gravity causes
1. everything to be pulled to the center
2. earth's tectonic plates to move
3. one plate to go under another plate
4. the plate that went under to go into the mantle
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Bb mates with BB?
Select one:
O a. All of the offspring will exhibit the
recessive trait.
O b. The dominant trait will show up in
about 75% of the offspring.
O c. All of the offspring will exhibit the
dominant trait.
O d. The recessive trait will show up in
about 50% of the offspring.
In complete dominance, the dominant alleles hide the expression of the recessive allele. Option C. All of the offspring will exhibit the
dominant trait.
What is complete dominance?
Complete dominance occurs when one of the alleles -the dominant one- completely hides the expression of the other allele -the recessive one- in heterozygous individuals.
Cross: BB x Bb
Gametes: B B B b
F1)
50% of the progeny will be homozygous BB
50% of the progeny will be heterozygous Bb
100% of the progeny will express the dominant trait.
The correct option is C. All of the offspring will exhibit the dominant trait.
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From a trough to a peak, the economy goes through
The economy will then start to shrink as it descends from the peak and enters recession.
What is happening to the economy during the trough phase?The economy's growth rate declined during the depression phase. Up until the demand and supply for products and services, as well as the prices of the factors, reach their lowest point, there is still a further decrease. Eventually, the economy sinks to its lowest point. The economy enters the peak phase when it reaches its highest level of output, which marks the end of growth. After this, a contractionary phase occurs as employment levels and housing starts start to drop.
The time between an economic activity's peak and its subsequent trough, or lowest point, is known as a recession. The economic cycle between its trough and peak is one of expansion.
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list the development from secondary oocyte to birth
A genetic experiment with peas resulted in one sample of offspring that consisted of:________
Answer:
439 green peas and 166 yellow peas for your answer
The following two genotypes were crossed: AaBbCcddEe x AabbCcDdEe. What will be the proportion of the following genotypes among the progeny of this cross?
AaBbCcddEe × AabbCcDdEe
AA ---> 1/4
Aa ---> 1/2
aa ---> 1/4
Bb ---> 1/2
bb ---> 1/2
CC ---> 1/4
Cc ---> 1/2
cc ---> 1/4
Dd ---> 1/2
dd ---> 1/2
EE ---> 1/4
Ee ---> 1/2
ee ---> 1/4
For example
AABbCCDdEe = 1/4.1/2.1/4.1/2.1/2 = 1/128
The proportions of each genotype among the progeny of this cross are approximately as follows:
AaAa: 13.33%Aabb: 13.33%AaBb: 26.67%AaCc: 13.33%Add: 6.67%AaDd: 13.33%AEe: 6.67%AaEe: 13.33%aEE: 6.67%aaEe: 13.33%Punnett square analysis is needed to identify the genotype distribution among the progeny of the cross between AaBbCcddEe and AabbCcDdEe. This will make it easier for us to see the possible allele combinations of both the parents and their respective frequencies in the offspring.
The alleles for each basic genotype will be listed initially:
Parent 1 (AaBbCcddEe):
Alleles: Aa Bb Cc dd EeParent 2 (AabbCcDdEe):
Alleles: Aa bb Cc Dd EeWhen we construct Punnett square, we get:
| Aa | Aa |
| Bb | bb |
| Cc | Cc |
| dd | Dd |
| Ee | Ee |
------------------
Aa| AaAa | AaAa |
| Aabb | Aabb |
------------------
Bb| AaBb | AaBb |
| Aabb | Aabb |
------------------
Cc| AaCc | AaCc |
| Aabb | Aabb |
------------------
dd| Add | Add |
| add | add |
------------------
Ee| AEE | AEe |
| aEE | aEe |
------------------
The number of each genotype in the offspring:
AaAa: 4 (AaBbCcddEe)
Aabb: 4 (AaBbCcDdEe)
AaBb: 8 (AaBbCcddEe, AaBbCcDdEe)
AaCc: 4 (AaBbCcddEe, AaBbCcDdEe)
Add: 2 (AaBbccddEe)
AaDd: 4 (AaBbccDdEe)
AEe: 2 (AaBbCcddEE, AaBbCcDdEE)
AaEe: 4 (AaBbCcddEe, AaBbCcDdEe)
aEE: 2 (aabbCcddEE, aabbCcDdEE)
aaEe: 4 (aabbCcddEe, aabbCcDdEe)
Now, we find the proportion of each genotype:
Proportion of AaAa: 4 / 30 = 2/15 ≈ 0.1333 or 13.33%
Proportion of Aabb: 4 / 30 = 2/15 ≈ 0.1333 or 13.33%
Proportion of AaBb: 8 / 30 = 4/15 ≈ 0.2667 or 26.67%
Proportion of AaCc: 4 / 30 = 2/15 ≈ 0.1333 or 13.33%
Proportion of Add: 2 / 30 = 1/15 ≈ 0.0667 or 6.67%
Proportion of AaDd: 4 / 30 = 2/15 ≈ 0.1333 or 13.33%
Proportion of AEe: 2 / 30 = 1/15 ≈ 0.0667 or 6.67%
Proportion of AaEe: 4 / 30 = 2/15 ≈ 0.1333 or 13.33%
Proportion of aEE: 2 / 30 = 1/15 ≈ 0.0667 or 6.67%
Proportion of aaEe: 4 / 30 = 2/15 ≈ 0.1333 or 13.33%
Therefore, the proportions of each genotype among the progeny of this cross are approximately as follows:
AaAa: 13.33%Aabb: 13.33%AaBb: 26.67%AaCc: 13.33%Add: 6.67%AaDd: 13.33%AEe: 6.67%AaEe: 13.33%aEE: 6.67%aaEe: 13.33%Learn more about Punnett square, here:
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In the water cycle shown below, which process is happening at step 3? precipitation
melting
evaporation
sublimation
Answer:
melting
Explanation:
because the water has got its freezing ponit
Answer: A: precipitation
Explanation: it is raining took the test this is the right answer
The typing of human blood is determined by three alleles: A, B, and O. Alleles A and B are codominant to one another and O is recessive to both alleles, A and B.
AA/ AO – type A blood, AB – type AB blood, BB/ BO – type B blood, OO – type O blood.
A woman who is homozygous for type B blood marries a man who is heterozygous for type A.
What is the genotype ratio of their offspring?
What is the phenotype ratio of their offspring?
Examine the Role of Lipids in Your Body Fat around organs phospholipids
Lipids are organic compound that are insoluble in water.
Lipids are derive from and give eg of lipids?
Lipids are derivative of fatty acids the example of lipids are oils, wax and steroids.
Role of lipids are:
1)They fuctions as store house of energy.
2) They are important signalling molecules
3) They serve as structural components of cell membranes.
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Phospholipids are essential structural components of brain and nervous tissue, of membranes throughout body tissues, and of lipoproteins—the runners of cholesterol and fats in the blood.
What is the role of fat and lipids in the body?
Within the body, lipids serve as an energy reserve, control hormones, transmit nerve impulses, cushion vital organs, and transport fat-soluble nutrients. Fat in food serves as an power source with high caloric thickness, adds texture and taste, and donates to satiety.
What are 4 functions of lipids in the body?The Roles of Lipids in the Body
Storing Energy. The extra energy from the food we eat is digested and incorporated into adipose tissue, or fatty tissue.Handling and Signaling. Insulating and Protective.Helping Digestion and Increasing Bioavailability.To learn more about Lipids , refer
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What is a change in the DNA sequence that can be beneficial harmful or niether ?
Answer:
A mutation
What can cause changes in a DNA sequence?
A mutation is a change in the DNA sequence. There are several different methods by which mutation happens. Of course, chemically produced mutations receive the most media attention. There are a wide range of substances that can cause mutations, usually by attaching to the DNA and causing it to break, requiring an incomplete repair, or by preventing DNA replication, forcing the replication machinery to repeat the DNA poorly.
However, other factors, such as exposure to radiation or light, can also cause DNA mutations. In reality, UV and X ray light are known to cause mutations by changing the DNA's base composition or causing DNA breaks.
Mutations are also spontaneously caused by DNA replication. Although it occurs extremely infrequently, the replication complex does occasionally make mistakes and insert the incorrect DNA base, which leads to a significant amount of mutations over the course of generations.
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Eddie
A mutation in the DNA sequence can be beneficial, harmful, or neither, depending on its impact on the organism.
Mutations—changes in the DNA sequence—can affect an organism. Mutations that improve survival and reproduction are helpful. Mutations can make an organism disease-resistant or adaptable.
Mutations can affect the organism's health or fitness. Mutations can cause genetic diseases, diminished fertility, and lower survival rates. Neutral mutations don't affect the organism's phenotypic or fitness. They may occur in non-coding DNA or silently modify the genetic code, leaving the amino acid sequence of a protein untouched.
Mutations' effects depend on their genomic location, gene function, and environment. Some mutations help evolution and adaptability, whereas others harm individuals or populations.
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Which of the following groups of organisms contains a cell wall?
I. Plantae
II. Animalia
III. Fungi
IV. Eubacteria
Discuss the selective pressures operating in the late miocene, pliocene, and pleistocene that favored the adaptive radiation of monkeys and contributed to decreased diversity among apes.
The selective pressures operating in the late miocene, pliocene, and pleistocene that favored the adaptive radiation of monkeys and contributed to decreased diversity among apes are :-
The primates migrated from Africa to Europe and Asia.The sudden changes in the environment and the ecology was the reason behind the migration to the different parts.The sudden cooling in the northern latitudes led to the extinction of apes.The changes in the sea levels that made a path to travel through made the migration possible.How did the changes cause the diversity among apes? The plate tectonic movement caused the formation of the mountain ranges and the shifting of the oceans, this caused a drastic change in the environment and the ecology.The rainforests changed into woodlands and grasslands and at some other parts the decrease in rainfall caused the decrease in forest area and less food availability in that area.The change in environment caused the decrease in forest area in Africa and that caused the extinction of the apes and the new era apes that have adapted the environment then survived and moved to different parts of the world for survival.Know more about the miocene :
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Brooke was supposed to visit her mother for dinner. She has been in bed all day, however, and does not have the energy to shower and get dressed. Brooke would likely be diagnosed with
post-traumatic stress disorder
a specific phobia
obsessive-compulsive disorder
major depressive disorder
Answer:
Brooke would likely be diagnosed with major depressive disorder because she's telling herself she has no energy showing lack of interest in what's planned and in other words 'lazy'
She might be suffering from major depressive disorder. As she is lacking the energy to do her work and it could be because of the drained energy in her mind.
What is the reason for such situations ?In this situation a person is either living alone or going through some difficult situations and unable to cope through the situations.
In the cases of excess depression the person is struggling through the mental thoughts and are not able to do their work properly. People like these are usually absent minded and they usually are lacking interest in the crowd.
In such situation the person should go to the family gatherings and the outings, learn to go out of their comfort zone. In such situations people like these situations should talk about their feelings out and try to find the conclusion with a wise situation.
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help now look at the picture
C
Weathering and erosion break down rocks back into sediment. heat and pressure makes metamorphic rocks
Name one salivary gland in humans
Salivary gland in humans ;
1) Sublingual glands
2) Submandibular glands
3) Parotid glands
Answer:
One salivary gland in humans is Parotid glands.
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the steady state theory proposed what?
A- that the density of the universe was getting bigger
B - that the density of the universe was remaining constant
C- that the density of the universe was getting smaller
D- the universe has no density
what is Hubble law ?
A- the most distant the galaxy the faster it is moving away from us
B- the more distance the galaxy the slower it is moving away from us
C- the closer the galaxy the faster it is moving away from us
D- the galaxies are not moving at all
blueshift means what?
A- an object is moving away from you
B- an object is approaching you
C- an object is not moving
D- an object is blue
which of the following did not detect the cosmic microwave background radiation?
A- Hubble space telescope
B- COBE
C- WMAP
D- penzias and wilson
Explanation:
1)steady-state theory, in cosmology, a view that the universe is always expanding but maintaining a constant average density.so the answer is B
2)Hubble's law, also known as the Hubble–Lemaître law or Lemaître's law, is the observation in physical cosmology that galaxies are moving away from Earth at speeds proportional to their distance.so the answer is A
3)B
Compare the Viking 1 and 2 probes to the Pathfinder probe that landed on Mars in 1997. How was their technology different?
Mariner 4 and 9 and Viking 1 and 2 probes needed enhanced cameras and wireless communication equipment to take images of Mars's surface and send them back to Earth. According to the video, how did improving our technology lead to new discoveries about Mars?
Using internet resources, describe how advances in imaging and wireless communication for space exploration have led to changes in imaging devices and communication on Earth?
Mars Odyssey and Mars Express required spectrometric equipment that could analyze Mars's atmosphere and surface composition and temperatures. Using internet resources, describe some home or business technologies that use spectrometric equipment to analyze the atmosphere or temperature?
Using internet resources, research one space probe described in the video. Describe its goals and justify its purpose by explaining how it helped advance our understanding of the universe?
HELP PLEASE!
THANK YOU
Improving our technology lead to new discoveries about Mars because the new technology helps us to find more information about the environment of the Mars planet.
How did improving our technology lead to new discoveries about Mars?Scientists use Terrain-Relative Navigation which is a device due to which the Perseverance rover can estimate its location while moving through the atmosphere of Mars on its parachute. Improvement in our technology lead to new findings about Mars. The new technology helps us to collect more data about the Mars planet.
So we can conclude that Improving our technology lead to new discoveries about Mars because the new technology helps us to find more information about the environment of the Mars planet.
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Answer:
1. Viking 1 and Viking 2 probes transmitted panoramic views of the red and rocky soils back to Earth after six years later. The Pathfinder probe sent back large amounts of data of the environment especially about climatic variations in only three months. You can tell the technology was very different between these two because of how long it took for each probe to gather data.
2. In 1965, Mariner 4 and 9 probes found geological formations (Olympus Mans). The Mariner 4 sent back the first image of Mars. The Mariner 9 found erosion marks that indicated that there was once water on Mars. In 1976, the Viking 1 and 2 probes transmitted panoramic views of the soils. From 1965 to 1976, they were able to discover more about Mars over improving the technology. When the Viking probes were launched, we discovered more than when the Mariner probes were launched. For example, we were able to uncover how red and rocky the soils were.
3. We now receive information differently thanks to wireless technology. For instance, we now have computers and phones that let us contact someone by simply pressing a button. GPS may now be used to display various places. Additionally, we can now forecast the weather. We can know the weather for every day because forecasters have access to a ton of technology. Thus, we now substitute archaic methods for digital ones.
4. Fire alarm and air conditioning systems include technologies that incorporate various communication systems that enable them to react to changes in the atmosphere or temperature. Therefore, when the atmosphere's temperature fluctuates, they are utilized.
5. Viking 1 and 2 were used to find life on Mars. Since they launched the Mainer probes, they found that there was once water on Mars which later created the Viking 1 and 2 probes for further investigation. Along with finding life on Mars, they were also created to take better photos of the planet.
Name each structure
Answer:
The organ is the female reproductive organ , the uterus
and the green arrow points to the cervix
All three regions of the brain stem can be observed on the ventral surface of the brain. True or false?.
Answer:
True
Explanation:
IUPAC name of 2,2,3-trimethyl butane
Answer:
Triptane molecular formula C7H16