Look at the embryonic structures of the different species shown here. The similarities between them can be used as evidence through

it's anything that aren't producers and consumers.

explanation:

you've got to be clear on what "this" is

because the light is a great source of energy for the plants to survive. (i hope this )

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.