Answer:
Ectotherms have the highest mass and the Endotherms have the lowest
The answer is C, hope this helps
Answer:
Size
Explanation:
Dinosaurs, based on recent studies show that they were larger animals and its not possible now for a bird to be the same height or weight as a dinosaur back then
Mammals are relatively complex and intelligent animals.
They give birth to live offspring, have hair or fur on their bodies, and possess mammary glands that produce milk for their young. They breath air with lungs and have ears that stick out instead of the earholes, such as what reptiles and birds have.
It’s the third one because if an organism dies off because it’s not evolved to match an environment that’s natural selection