B) cell because all living things are made up of cells
Mitochondria, using oxygen available within the cell convert chemical energy from food in the cell to energy in a form usable to the host cell.
It is most likely Vulval herpes.
It is infection caused by Herpes simplex type I or type II. Herpes is manifested with vesicles that are aggregated and filled with clear fluid. These vesicles later rupture and thus form ulcers. Symptoms include pain, burning, or itching.
1. P (because the tick is benefited but the dog isn't.)
2. M (because both organisms are benefited.)
3. P (the tapeworm is benefited but the student isn't.)
4. C (because the bird's nest is benefited and the tree is not harmed)
5. C (the hermit crab needs the sea anemones and the sea anemones is not harmed)
But yeah I gave you a few examples of (P, M, and C), so you should figure it out now.
6. C
7. P
8. M
