Help it’s supposed to be in order

According to the loco mass the mass of reactants and products

Which would best keep the oxygen cycle stable? a. cutting down jungles to create farmland b. eliminating parks in large cities c. dumping toxic chemicals into the ocean d. reducing the amount of deforestation d. reducing the amount of deforestation

How energy flows through each level in this energy pyramid. is all the matter and energy from one level transferred to the next level?