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denpristay [2]
3 years ago
10

A hawk has a genetic trait that gives it much better eyesight than other hawks of the same species in the same area. Explain how

this could lead to evolutionary change within this species of hawk over a long period of time. In your answer, be sure to include an explanation of:
a. competition within the hawk population
b. survival of various individuals in the population
c. how the frequency of the better-eyesight trait would be expected to change over time within the population
d. what would most likely happen to the hawks having the better-eyesight trait if they also had unusually weak wing muscles
Biology
1 answer:
BARSIC [14]3 years ago
3 0
C. How the frequency of the better-eyesight trait would be expected to change over time within the population
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Plz help ASAP plz and thanks
kompoz [17]

Answer:

B.

Explanation:

B. is the best choice here because it is the only characteristic listed that only describes a eukaryotic cell. Both prokaryotic and eukaryotic cells have cell membranes, cytoplasm, and cillia. However, only eukaryotic cells have a nucleus to store their DNA.

8 0
3 years ago
Is the trend in biomass in Pyramid X the same as seen in Pyramid Y? Explain your answer.
Bingel [31]
No the mass of the producers is smaller than the mass of primary consumers,after that level the biomass of each trophic level decreases steadily.
got it off of a quizlet for u shawty
8 0
2 years ago
How does the carbon cycle affect climate change and global warming on our planet? (Think about the different ways that carbon is
Lilit [14]

Answer:

Explanation:

The amount of global warming will depend on the magnitude of future emissions, which, in turn, depends on how society grows and develops. The rate of warming will also depend on how sensitive the climate is to increased atmospheric greenhouse gases.

Yet climate change also depends on an under-appreciated factor known as “carbon-cycle feedbacks”. Accounting for uncertainties in carbon-cycle feedbacks means that the world could warm much more – or a bit less – than is commonly thought.

The carbon cycle is the collection of processes that sees carbon exchanged between the atmosphere, land, ocean and the organisms they contain. “Feedbacks” refer to how these processes could change as the Earth warms and atmospheric CO2 concentrations rise.

The commonly used warming projections – those highlighted in Intergovernmental Panel on Climate Change (IPCC) assessment reports – include a single best-estimate of carbon-cycle feedbacks. But they do not account for the large uncertainties in these estimates.

These uncertainties are “one of the dominant sources” of divergence between different model projections, according to Dr Ben Booth and colleagues at the Met Office Hadley Centre.

Climate campaigners, such as Greta Thunberg, have also expressed concern that climate projections typically do not fully incorporate the potential range of carbon-cycle feedbacks.

This article explores the implications of carbon-cycle feedback uncertainties by examining a number of modelling studies conducted by scientists over the past decade. These studies give a similar central estimate of carbon-cycle feedbacks to those used in IPCC projections.

But, at the high end, the results show these feedbacks could push atmospheric concentrations of greenhouse gases much higher – meaning more warming – from the same level of emissions.

Analysis for this article shows that feedbacks could result in up to 25% more warming than in the main IPCC projections.

Importance of carbon-cycle feedback uncertainties

Today, around half of the CO2 emitted by humans remains in the atmosphere, with the remainder absorbed by the oceans and land. However, as the Earth warms this is expected to change. For example, warming reduces the amount of CO2 absorbed by surface ocean waters and the amount of carbon sequestered in soils. It can also accelerate tree death and the risk of wildfires. Thawing permafrost may release additional carbon into the atmosphere. Overall, the carbon cycle is expected to weaken as a result of climate change, leading to more emissions remaining in the atmosphere and less being absorbed by the land and oceans. All of these processes introduce uncertainty when translating future CO2 emissions into changes in atmospheric CO2 concentrations.

Changes in carbon cycle behavior as the Earth warms is an example of a climate feedback – a self-reinforcing change to the Earth’s temperature from a secondary factor. Not all of these feedbacks will necessarily act to increase temperature, however. CO2 fertilisation effects can lead to additional vegetation growth, sequestering more carbon. Nitrogen cycle changes can also enhance land uptake of carbon. Dynamic vegetation changes in response to a warming climate – which account for potential vegetation shifts as regional climate change – also have important, but uncertain effects on the carbon cycle.

6 0
2 years ago
The ability of muscle to shorten forcibly when adequately stimulated is known as ________
Andrej [43]

The ability of muscle to shorten forcibly when adequately stimulated is known as <u>contractility.</u>

Explanation:

  • Contractility is defined as the ability of muscle cells to contract forcefully to bring about movement in body organs.
  • The folding of arms are results of contractility of biceps and triceps.
  • Contractility of cardiac muscle to regulate pumping of heart is again a result of contractility of myocardial muscle.
5 0
2 years ago
Read 2 more answers
Which structure in the cell corresponds with the function of the human lungs
Orlov [11]
The correct answer is mitochondria. Mitochondria is an organelle in the cell that corresponds to the function of the human lungs.It helps the lungs in the biochemical process of respiration and with the energy production (cellular respiration.)
6 0
3 years ago
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