Which pair of words best represents the relationship between the following words? book – library

biotic – abiotic
biotic – abiotic

organism – ecosystem
organism – ecosystem

theory – law
theory – law

hydrogen – oxygen

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.

kelp are large brown algae that live in cool, relatively shallow waters close to the shore. they grow in dense groupings much like a forest on land. these underwater towers of kelp provide food and shelter for thousands of fish, invertebrates, and marine mammal species.

e) all of the above

the correct answer is 2 and 4