Explanation:
Quaternary consumers, meanwhile, occupy the top position in the pyramid of energy because nothing preys upon them in turn. The prey of one species might also be the predator of another species.
Active transport. it's the only method of transfer of material that is again concentration gradient
Structure A is the mitochondria
Speciation, when populations evolve to become distinct species
Answer:
Chemical digestion involves the secretions of enzymes throughout your digestive tract. These enzymes break the chemical bonds that hold food particles together. This allows food to be broken down into small, digestible parts.
Explanation:
