What type of orngansizm does photosynthesis and celular respiration occur in

Why is excretion necessary to maintain homeostasis?

Which statement describes how favorable traits in a population relate to natural selection? they are the only traits that ever exist in the population. they build in the population over time. they are rarely passed on to offspring. they are found only in a few individuals within the population.

Darwin’s hypothesis about how life changes over time is now called?