Answer: B: the variety of living things on Earth.
(Biodiversity refers to every living thing, including plants, bacteria, animals, and humans.)
The answer is 3. During dehydration synthesis and enzyme joins two monomers water is a byproduct
Answer: Stem cells are the bodies raw materials
Explanation: Stem cells are cells from which all other cells with specialized functions are generated. They can multiply to make daughter cells in the right conditions. They either become more stem cells or specialized cells.
C- All protists are unicellular. Hope this helps you !!