Ten !
phosphorus, one of the most important elements in life, is found in
a. dna.
b. sugars.
c. proteins.
d. all organic compounds.

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.