In parasitism, one organism harms another organism (the host). An example would be fleas living in cats/dogs; they feed on their blood.
Therefore the answer is A is harmed, and B is helped.
Amino acid reactions. Amino acids via their various chemical functionalities can undergo numerous chemical reactions.
1. Limited energy supply to other organisms
2. Herbivores will be scarce because they don’t mate
3. Avoid pollution
Adding sanctions and punishing offenders
Answer:
I would go with B:
The body must maintain homeostasis so that the internal environment stays the same if the outside
