water pollution

Question 1

any physical or chemical change that adversely affects the health of humans or other organisms.

Answer 1

Water Pollution

Question 2

any substance that, in excess, are known to be harmful to living organisms

Answer 2

Pollutants

Question 3

The leaking and release of human wastewater from drains or sewers

Answer 3

sewage

Question 4

water pollution via sewage Causes two serious environmental problems

Answer 4

enrichment
Biological Oxygen Demand increase

Question 5

over-fertilization of a body of water by high
levels of plant and algal nutrients

Answer 5

enrichment

Question 6

amount of oxygen needed by microorganisms to decompose biological wastes that enter their habitat

Answer 6

Biological Oxygen Demand (BOD)

Question 7

if BOD increases oxygen levels…

Answer 7

decrease

Question 8

test for sewage pollution by..

Answer 8

test for nutrients (+ if high) and dissolved oxygen (+ if low)

Question 9

chemicals such as Nitrogen and Phosphorus stimulate the growth of plants and algae (pollution type)

Answer 9

inorganic nutrients pollution

Question 10

major sources of inorganic nutrients (2)

Answer 10

-human and animal waste
-agricultural fertilizer runoff

Question 11

inorganic nutrients pollution consequences

Answer 11

• Enrichment, increased BOD, decreased Dissolved Oxygen

Question 12

harmful microorganisms that cause diseases; will get into water supply (usually originate in the wastes of infected individuals)
* Common bacterial or viral diseases

Answer 12

infectious organism pollution

Question 13

infectious organism pollution test for ….

Answer 13

presence of E. coli - indicates presence of fecal matter in water

Question 14

occurs when there is an excessive amount of suspended particles (sediment) in water

Answer 14

sediment pollution

Question 15

the term we use to describe water clouded by sediment

Answer 15

turbid

Question 16

Major sources of eroded sediment (6)

Answer 16

-agricultural lands
-foresst soil exposed from logging
-degraded stream banks
-overgrazing rangelands
-strip mines
-construction

Question 17

Effects of turbid water

Answer 17

-Limits light penetration through water, harming photosynthesis
-Covers aquatic animals and plants
-Brings insoluble toxins into waterways

Question 18

heated water produced by industrial
processes and power plants is released into waterways

Answer 18

thermal pollution

Question 19

thermal pollution effects

Answer 19

-Increasing temperatures affects organisms that live in waterways
-Increasing temperature decreases the amount of Oxygen that can be dissolved in water and creates unfavorable habitats for organisms

Question 20

Heavy metals like lead, mercury, and zinc can get into a water supply by industrial activity, waste, agricultural activities, or natural sources

Answer 20

pollution vis heavy metals and organic compounds

Question 21

pollution steps

Answer 21

1. surface - effects soil and plant/animal life
2. soaks into ground - effects plants/animals
3. runs into nearby streams - affects plants/animals
4. soaks into groundwater - affects drinking water