Why is it said that sunlight provides energy either directly or indirectly to all living thing on earth?
do at least 4 sentences : d

Ultimately, almost all this chemical energy comes from a process called photosynthesis. In this process cells use the energy of sunlight to make a sugar called glucose. Once glucose is in a cell, the cell uses the chemical energy of glucose to produce another chemical called adenosine triphosphate (ATP). Cells then use the chemical energy of ATP to drive the cell's important reactions.

genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).

i wish i could with all of them i can barley see the first one so here's the answer to the first one b