I have been stuck on this one for 2 days PPPPPPPPPPPPPPLLLLLLLLLLLLLLZZZZZZZZZ help

Sun - Maple trees - Caterpillars - Finches - Hawks
Sun - Grass - Cows
Sun - Plankton - Shrimps - Salmon fish - Humans.

Pick an organism in the list above and describe how one of its structures allows it to survive in its environment. (1 point)

Think about how one part of the organism's body is designed to do a specific job well.