Answer:
15
Explanation:
the atomic number is the number above the symbol. the number below is the atomic mass.
She should have to classify this animal under pseudocoelomates category. The body cavity of these animals are filled with fluids. Internal organs are covered by the fluid filled space. The body cavity serves as the hydrostatic skeleton and have other functions such as digestion of food and waste removal.
Catabolism/destructive metabolism. Both terms are used to describe the process of breaking down complex molecules for its stored energy.
I think that that the answer should be C asexual reproduction of a single-celled organism
