D.) A trophic level
This is your answer I hope it helps.
When cells get too large, they not cannot properly expel waste or bring in enough nutrients, and so they begin to fail. In organisms, especially humans, mitosis divides the cells.
Interphase: cell is growing and going through normal functions
Mitosis: cell's genetic material and nucleus divide
Prophase: chromatin condenses, nucleus breaks down, centrioles move to opposite sides, spindle forms and pulls sister chromatids apart
Metaphase: spindle fibers move to the middle of the cell
Anaphase: sister chromatids separate, spindle shortens, pulling chromatin to opposite sids
Telophase: chromosomes reach opposite sides and uncoil,nuclear membrane forms around genetic material again
Cytokinesis: division of the cytoplasm
End Result: two genetically identical cells
A. Conversion of radiant energy into chemical energy.
Lets say that there is an disease or infection on a certain species, if the community was not very diverse then that whole species will be effected because they are all alike. This can lead to an extinction of that species which then leads to the a possible collapse in the community due to the change in food webs.
More diversity equals to more stability because these risks have a fewer chance of happening.
I hope all of that makes sense(;
Exocrine- Digestive
Endocrine- Hormonal
Is that what you're looking for?