An ecosystem is a community of living organisms in conjunction with the nonliving components of their environment, interacting as a system. ... By feeding on plants and on one-another, animals play an important role in the movement of matter and energy through the system.
..........Proteins..........
My gf is if that counts :)
Answer:
an enzyme! Keep in mind that an enzyme catalyzed the rate of a reaction. A normal reaction must climb the activation barrier independently, while the one catalyzed by an enzyme has a lower activation barrier due to added stability.