If a strand of DNA has 20% C, calculate the percentages of
G:
T:
A

G would be 20%

T and A then would make up 60% so 30% each

Explanation:

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.