Respuesta :
Answer:
B
Explanation:
Reservoir B is labeled as sentence Organic materials unavailable as nutrients. It contains a factory emitting smog into the air, and layers described from top to bottom as peat, coal, and oil.
The biogeochemical cycles show the movement of elements across the ecosystem.
What are element cycles?
The term element cycles shows the movement of elements in nature. The question is incomplete as the element diagram is missing but I will still try to help you the much I can.
We know that elements move from one point to another in the biogeochemical cycles and these cycles account for the movement of various substances in the ecosystem.
Learn more about biogeochemical cycles: https://brainly.com/question/11934397