running water can be used as an energy source to produce hydroelectric power.
An exoskeleton is the outer skeleton of an animal to protect them. An exoskelton is also called a shell.
Answer:
B
Explanation:
Nucleobases, also known as nitrogenous bases or often simply bases, are nitrogen-containing biological compounds that form nucleosides, which in turn are components of nucleotides, with all of these monomers constituting the basic building blocks of nucleic acids.
