Answer:
C, carbon dioxide and water
Answer:
Senior mothers are also under pressure to share food with their sons, so that they're able to reproduce as well. It also makes sense for these mothers to assist their sons because as the mothers grow older, they are increasingly related to whales in other, neighboring pods via their sons' calves.
Answer:
They are 3 in numbers
Explanation:
which are the airway, the lungs, and the muscles of respiration
