Answer:
A
Explanation:
Fahrenheit doesn't accurately answer the question
Answer:
a. similar environments and specific traits increased their chances of survival
Explanation:
I eliminated b because of the statement "caused exactly the same mutations." Considering that mutations are entirely random, this would be highly unlikely. Choice a. fits better with the concept of convergent evolution and natural selection. If they evolved in different environments, they would have adapted in diff. ways and thus had diff. body structures.
Answer:
A) Silver maple
Explanation:
When looking at the food web, you can see that the arrow pointing at the beaver is going from the silver maple.
Answer:
<h2>100 kcal</h2>
Explanation:
Energy transfers from autotrophs ( producers) to heterotrophs (consumers).
In this way approx 90% of the total energy is consumed by each trophic level, means only 10% energy is transferred from each tropic level.
So as given here, in primary trophic level ( producers), total energy is 10,000 kcal.
Now the 90% (9000 kcal) of this energy is consumed( like in the form of heat and respiration) in trophic level 1 and 10% (1000kcal )is transferred to the trophic level 2( first-order consumers).
And from this energy 90%(900kcal) is consumed in trophic level 2( first-order consumers) , so only 10% (100 kcal) is transferred to the trophic level 3 (second-order consumers).