Reptiles become more active as the day gets warmer. This is because
they have scaly skin. they have slimy skin. their body temperature stays at a constant level. their body temperature changes with the environment.
Question: Reptiles become more active as the day gets warmer. This is because
A. they have scaly skin.
B. they have slimy skin.
C. their body temperature stays at a constant level.
D. their body temperature changes with the environment.
Answer: