2. D.-> All organisms may vary in shape, size, design, but all are equally important. Without one, one may fall, and other may rise. There are producers (plants), consumers (animals), decomposers (fungi and bacteria), and other factors, which all benefits one another; that’s why it’s harmonious, for one’s death can also lead to the birth of a new life. Due to this reasoning, all living organism have an equal importance to each other, if one ecosystem change, so does the other.3. D.-> Humans are not a natural disasters, they are “man-made” in simpler terms us humans have interventions/actions for us to do big damage to the environment that may cause calamities.