Under the sea ice during the Arctic’s pitch-black polar night, cells power photosynthesis on the lowest light levels ever ...

A similar method described on the previous page can be used to prove that photosynthesis ... foil remain pale. Independent variable – the presence or absence of light. Dependent variable ...

This process, called photosynthesis, is essential to the global carbon cycle and organisms that conduct photosynthesis represent the lowest level in most food chains (Figure 1). Most living things ...