Which type of eclipse makes the sun appear in the form of a ring

Which statement is the best summary of the model? a-a series of aerobic and anaerobic reactions take place in cells b- the sun's energy moves through trophic levels in a food chain c-light energy is converted into stored chemical energy plants.d- food molecules are broken down in the cells if living things.

24. how are vaccines used to keep people healthy?

Can someone give me the answer to this question? you so much