Question

Which 2 groups of animals have high energy needs...?why do they need high amount of energy? How is it achieved

Answer 1

birds and fishes want high energy need because fly and they want high energy for wings to fly and caught the predictor . fishes and both want to maintain there temp so they want high energy and they are colld hearted

Answer 2

Birds and animals need high level of enrgy to maintain their body temperature. They achieve this by double circulation.