Unit 1.5

Question 1

Pollution

Answer 1

the addition of a substance or an agent to an environment through human activity, at a rate greater that that at which it can be rendered harmless by the environment

Question 2

Non-point source

Answer 2

release of pollutants from numerous, widely dispersed origins

Question 3

Point source

Answer 3

release of pollutants from a single, clearly identifiable site

Question 4

Persisten pollutants

Answer 4

don’t break down under natural processes

Question 5

Biodegradable Pollutants

Answer 5

those who can break down under natural processes

Question 6

Primary pollutants

Answer 6

pollutants who are active upon emission

Question 7

Secondary pollutants

Answer 7

arise from primary pollutants undergoing some chemical or physical change