Answer: A storm or tornado
Explanation:
Answer: B and D
Explanation: just took the assignment
I believe that renewable energy may be the answer because D is absolutely not the answer and A would not help us. That's leaves us with B and C and B seems like it's a better choice than C.
Something that is true about the diagram you posted and how ecologists work, we can say that the diagram is a model based on observations and experiments. Ecologists use models to explain <span>phenomena and make predictions. In that way the get the best of the results. I hope this can help a lot </span>