Question

31) Eutrophication is the situation where
A. The atmospheres receive too much carbon and it traps more heat.
B. A water body is damaged by excess nutrients like hydrogen.
C. A piece of land is over fertilized.
D. The gradual increase in the concentration of phosphorus, nitrogen, and other plant nutrients in an
aging aquatic ecosystem such as a lake.
32) The Greenhouse Effect is a problem that occurs when.
A. A water body is destroyed by excess nutrients like nitrogen.
B. Excess CO2 causes too much heat to be trapped in the earth's atmosphere.
C. A greenhouse plant receives too much fertilizer.
D. A house painted with excessive green colours.
33) What is nitrogen used for?
A. To make rain, sleet, and snow.
B. To make proteins.
C. To make dead things.
D. To create elements.
No irrelevant answers plz