Answer:
Your heart is a single organ, but it acts as a double pump. The first pump carries oxygen-poor blood to your lungs, where it unloads carbon dioxide and picks up oxygen. ... The second pump delivers oxygen-rich blood to every part of your body. Blood needing more oxygen is sent back to the heart to begin the cycle again.
Explanation:
Eat my dog lol xd just kidding lol what how
Answer:
the answer is C, destroyed when the chemical bonds of glucose are made or it might be D, saved in the chemical bonds of water
Explanation:
i hope i helped :)
It can be from macroevolution