What condition must exist in a cell that would cause the cell to enter into fermentation?

explanation:

the sun shines white and black light to our planet. the white light has all the colors in it. in our upper atmosphere, we have dust particles and oxygen molecules. the white light meaning all of the colors in a rainbow shines through the upper levels of the atmopshere and the blue light scatters across the entire planet. that is why our sky is blue.

answer///(c) the maximum number of organisms an environment can support for a long time; i believe this is correct, plz check luck;