Nuclease to the ribosomes, pardon spelling im in a rush :)
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.
Scientific laws or laws of science are statements, based on repeated experiments or observations, that describe or predict a range of natural phenomena. ... Scientific laws summarize the results of experiments or observations, usually within a certain range of application.
If they live in a river, they would most likely need fins (to swim) and gills (to breathe under water)
Hope this helps!
You're answer would be B) Terrae.
Hope this helps,
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