Answer:
B. Parasympathetic impulses
<span>DNA, cell membrane, ribosomes, and membrane-bound</span>
Mutation is the only evolutionary mechanism that does little to change allele frequencies.
Answer:
Organism.
Explanation:
The cell is the smallest form of life. Cells work together to form tissues, tissues work together to form organs, and organs work together to create an organ system, and organ systems work together to create organisms. I believe "organism" includes all of these other levels.
