I believe the answer is B.
Homeostasis is the maintaince of a stable internal condition. If the cell membrane controls this by regulating what goes in and out of the cell(thats what the membrane does) Then the membrane helps maintain it, so if it were damage, you would have troublr mainting homeostasis
The answer is greenhouse gases
Meiosis is a kind of cell division.
it's used to reduce half of the chromosomes and prodouce 4 gamete cells, which we call these cells haploid.
for example, it is used in human reproduction, for the sperm and ovum, in order to have a sexual reproduction.
the offspring of them are genetically non identical to the parent.
If he studied a small sample it wouldn't be a representative sample. since he got such a large sample there is a chance most likely all organisms follow the rules of evolution.