Question

Develop a hypothesis about the evolution of flight (include how and when flight evolved)

Answer 1

Wings evolved because bipedal animals were leaping into the air; large wings assisted leaping. Wings evolved from gliding ancestors who began to flap their gliding structures in order to produce thrust. The flight appears to have evolved separately four times in history: in insects, bats, birds and pterosaurs. These four groups of flying animals didn't evolve from a single, flying ancestor. Instead, they all evolved the ability to fly from separate ancestors that couldn't fly.