D. They are heterotrophs that digest food internally.
Answer:
C) is zero
Explanation:
According to the law of energy conservation, the total mechanical energy of the object is conserved. A book falling a distance d would have a change in potential energy, resulting in the same change in kinetic energy. But the total mechanical energy must be the same. So there's 0 change in total energy of the system.
Answer:
interna
Explanation:
please mark as brainllest
It’s the crest, the crest is the top part of the wave and the trough is the bottom so they correspond
