Answer:
D.Bacteria
Explanation:
A & B are primary producers
D is a secondary consumer
Nzymes are highly selective catalysts, meaning that each enzyme only speeds up a specific reaction. The molecules that an enzyme works with are called substrates. The substrates bind to a region on the enzyme called the active site. There are two theories explaining the enzyme-substrate interaction.
<span>The role that Stratigraphic dating have played in determining the occurrence of mass extinctions is in its ability to identify different sediment debris. This includes rock and other materials that form or accumulate as the result of natural processes, human activity, or both</span>
Both viruses and animal cells require another cell to reproduce. Also, they both have a nucleus a cell membrane.
