A species that normally lives and thrives in a particular ecosystem; any species that developed with the surrounding habitat.

A native-species

Explanation:

A native-species is one that normally lives and thrives in a particular ecosystem. They are any species that developed within the surrounding habitat.

They are usually found in an ecosystem because of natural processes like evolution or natural selection. They are known to occur naturally within a given habitat as opposed to species that are introduced.

only about ten percent of the energy at one trophic level is passed on to organisms at the next trophic level. the remainder of the energy is used in life processes or lost as heat.

i believe it's c. the trait for large beaks will be passed on to future generations through natural selection.

since eventually smaller beaks would have to find another source of food or even eventually just die out from the lack of food.