The correct answer is a nutrient runoff.
Nutrient runoff is a major reason for eutrophication of surface waters, in which extra amount of nutrients, generally phosphorus or nitrogen, instigate growth of algae. Sources of nutrient pollution involve surface runoff from pastures and farm fields, emissions from combustion, and discharges from septic tanks.
Answer:
It is A Pls correct me if I'm wrong
Explanation:
Option C would be correct. The organ system can plays many parts at one time. Also, it is the only system listed.
Hope this helps!
It is known as stimulus or the plural form stimuli. It can be external or internal.
They basically do most of the work in the cells and are required for the structure, function, and regulation of the body's tissues and organs. (made up of thousands of smaller units called amino acids)
