The original ancestor of all life on earth was a(n) flagellate microbe arthropod cyanobacteria

1 digestive system

2 stomach

3 bladder

4 carbon deoxide

5 tiger

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.