I would go with mathmatical formula because of physics and what not but I'm not completely sure so if you have a different possible answer you think would be better, go with that :)
The answer is D) unlimited flow of water into or out of the cell for #9.
For #10, the answer is C) endocytosis and exocytosis.
Answer:
Mutations can be caused by radiation
if my answer helps you than mark me as brainliest.
C. is the answer because there us mutualism between both species.
