In the 10%/90% Rule, what amount is lost as heat and what amount is transferred to the next tropic level?

10% of the energy is transferred while 90% is lost through metabolic processes as heat.

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.

which