Q40 stem cells that can differentiate into osteoblasts are called cells.

Which of the following is the best definition for the process of photosynthesis? a.) plants digest sugars to make energy. b.) plants use oxygen and glucose to make carbon dioxide. c.) plants use sunlight and carbon dioxide to make sugars. d.) plants use sunlight to make chlorophyll and chloroplasts.

What are some natural processes that represent physical and chemical changes?

People with one sickle cell allele are not likely to get malaria. what is this an example of?