How do light reactions help the Calvin cycle
A. They break down macromolecules
B. They provide photons
C. They create hydrogen ions
D. They provide energy carriers

The organelle pictured is found in cells of and is theorized to have once been an independent organism.

Which statement describes john tuzo wilson’s contribution to the theory of plate tectonics?

The image shows the evolution of a species of fish. a few fish from a population developed different social behaviors and evolved into different species. two fish according to the image, the fish underwent . the new species of fish had mating seasons that were different from that of the original fish. because of the differences in mating seasons, the fish underwent reproductive isolation. this mode of isolation would be .