The answer is A. They produce food by photosynthesis.
The function of leaves is taken on by stems of such cacti.
Because an organism with a genetic variation may have better chances of breeding and passing on that trait if the trait is beneficial to the survival of that organism. This leads to that trait being passed on and becoming wide-spread over generations of reproduction; natural selection.
Electrons are transferred sequentially between the two photosystems w photosystem I acting to generate NADPH and photosystem II acting to generate ATP the pathway of electron flow starts at photosystem II which is homologous to the photosynthetic reaction center of R (Brainliest Answer Will be appreciated:D)
C.) The prefix pro means to advance, in this case the promoter is the chemical that starts the replication
Photosynthesis helps plants grow and become stronger as the more sunlight hits them. It’s where plants get all there nutrients aka food from to keep living.
