C, pretty sure due to natural selection and theory of evolution
It is an organelle because it is kind of like a tiny organ that is inside a cell.
Organ
Cell
Organcell
Organelle
Thats how I remember! I hope it helps!
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.
