Biology

The correct answer is: B.Adding Fertilizer to farmlands.

Explanation:

1.Adding Fertilizer to farmlands: Phosphate fertilizers are commonly used in agriculture to enhance plant growth. These fertilizers contain phosphorus, which is an essential nutrient for plants. When applied to farmland, they artificially increase the amount of phosphorus in the soil, and excess phosphorus can sometimes run off into nearby water bodies, raising phosphorus levels in those ecosystems as well.

The other options are not correct in this context:

A.Deforestati...