That Quiz For Tomorrow

Question 1

Biomagnification

Answer 1

The process in which chemicals not only accumulate but become more concentrated at each tropic level in a food pyramid

Question 2

Key stone species

Answer 2

Species (salmon) that can greatly affect population numbers and the health of the ecosystem

Question 3

PPM

Answer 3

Stands for parts per million. Usually describes the concentration of something in water or soil (ppm is equivalent to 1 milligram)

Question 4

Heavy metals

Answer 4

Metallic elements with high density that are toxic to organisms at low concentration

Question 5

DDT

Answer 5

Stands for dichloro-dipthenyl-trichloro. An insecticide and well known persistent organic pollutant, now banned in many countries

Question 6

PCB

Answer 6

Stands for polychlorinated biphenyls synthetic chemicals containing chlorine that are used in the manufacture of plastics and other industrial products become stored in tissue of animals, and also persist in the environment

Question 7

Bioremediation

Answer 7

micro organism or plants that break down chemical pollutants in water or soil

Question 8

Bioaccumulation

Answer 8

The gradual build up of chemicals in living organisms