A. M checkpoint
I just answered this question doing a test on Plato.
Answer:
Energy and nutrients are cycled throughout all the different components of the ecosystem. The non-living components like heat and nutrients are called abiotic factors. Both biotic and abiotic factors contribute to an environment's health. Biotic factors include plant productivity and animal behavior.
The variable is independent because you are affecting it by changing it individually. It would be dependent if you changed one variable then the water was affected.
Do you have a photo of your question
