How are c3, c4, and cam alike? A: they all measure color/color intensity
B: They are all ways to change sunlight to chemical energy
C: They are all ways to decompose dead organic matter
D: They are all formulae for plant cell wall materials ​

C3 and C4 indicates the number of carbon atoms in the sugar molecules produced by the photosynthesis. CAM is Crassulacean acid metabolism in which carbon dioxide CO2 is fixed at night. Generally, C3 plants are suited to cool, moist conditions, C4 to hot and dry, and CAM to arid conditions.

i believe the answer is a or 1