Answer:
A) Agents
Hope that helped! I wasn't 100% sure but I hope this is right. If it's wrong, please tell me! Have a good day!
C precipitation because if you look at the diagram, you will see it is raining on the mountains.
It would lower the pH, raise the acidity of the water, and it would kill off a lot of marine life if it got too high. As species begin to die their predators follow, and this could cause mass extinction.
Answer: Skeletal muscle is a heavy consumer of energy.
Sun which produces sunlight