What's the process through which producers convert the light from the sun into usable energy? a. respiration b. photosynthesis c. decomposition d. burning

Pepsin is an enzyme in the stomach that breaks polypeptides into amino acids. pepsin functions best at a ph of around 1.5. what would be the most likely result if the ph of the stomach were increased to 5

In the diagram below, the northern hemisphere would be in what season at position a a.fall b. winter c.summer d.spring

Which statement correctly identifies the scientific question and describes why the question is scientific? question 1 refers to the supernatural.question 2 reflects a moral or social value.question 3 refers to something that can be measured.question 4 reflects a question that can’t be observed.