The light reaction takes place
A. Only in light
B. In light or dark
C. Only in dark

Ecosystems involve living organisms interacting with non-living things in a productive way; how is photosynthesis an example of this? answer, i will give brainiest to first person to get it right.

Nucleic acid certain protein cell membranes certain carbohydrates

Which is the graph of the piecewise function f(x)? f(x) = image for option 1 image for option 2 image for option 3 image for option 4