Unit 8

Question 1

algae blooms

Answer 1

a large concentration of aquatic microorganisms

Question 2

bioaccumulate

Answer 2

to accumulate inside the body of living creatures

Question 3

biodegradable

Answer 3

able to be broken down in the environment

Question 4

diffused

Answer 4

spread

Question 5

marine pollution

Answer 5

the introduction of elements or substances into an aquatic environment that change the quality of the water or otherwise negatively impact the environment

Question 6

persistent

Answer 6

how long a pollutant stays in the environment

Question 7

pollutant

Answer 7

any element that directly or indirectly causes damage to an organism

Question 8

runoff

Answer 8

the draining away of water and the substances it contains from the surface of the ground

Question 9

sanctuary

Answer 9

a protected area

Question 10

synthetic

Answer 10

made by humans through chemical processes

Question 11

toxicity

Answer 11

the degree to which a substance is harmful

Question 12

tributary

Answer 12

a river or stream feeding into a larger body of water