<span>B. He needs to take extra precautions when standing up because of possible orthostatic hypotension and resulting injury from falls.</span>
The root word of Unicellular already tells you the answer. Uni means only one cell. So the answer is one cell.
Answer: Directional selection occurs when individuals with traits on one side of the mean in their population survive better or reproduce more than those on the other. ... Directional selection does the “heavy lifting” of evolution by tending to move the trait mean toward the optimum for the environment.
Answer: The job of tRNA is to read the message of nucleic acids, or nucleotide and translate it into proteins, or amino acids .
Explanation:
Meiosis is important because it ensures that all organisms produced via sexual reproduction contain the correct number of chromosomes.
