I am sorry I can only answer 7 for you.
Hope it helps
7= By replacing the neurons lost from a injury with new cells.
I believe the answer is "A. almost zero."
Even though you haven't put the rest of the question, I assume it asks what the "weight" of an electron is in comparison to neutrons and protons.
Answer:
it will have trouble while doing photosynthesis process,and it can't exchange gases
The biological interaction in which one organism hunts, kills, and eats another organism for energy is known as predation