the density of water is equal to 1.0 g/cm^{3}. A substance with density equal to 2.1 g/cm^{3} would in water?

Sink

Explanation:

Since water density is 1, substances whose density is less than 1 will float while those whose density is less than 1 will sink.

The more the density of the substance approaches 1, the less part will appear above the water level. Scientist discovered that the density of the substance tell exactly where the substance will be placed.

Example, a substance with density 0.1 then 10% will be below the water line while if the density of the substance is 0.9 then 90% of the substance will be below the water line.

affects the water bodies: excessive use of fertilizers causes eutrophication. the fertilizers which are used on plants affect the quality of land on which it is used, further causing erosion of soil. the fertilizers used on plants contain harmful chemical fumes which affect the environment.