water pollution hard

Question 1

• Sewage
• Disease-causing agents
• Sediment pollution
• Inorganic plant and algal nutrients
• Organic compounds
• Inorganic chemicals
• Radioactive substances
• Thermal pollution

Answer 1

types of water pollution

Question 2

point source

non point source

Answer 2

sources of water pollution

Question 3

•Any physical or chemical change in water that adversely affects the health of humans and other organisms

Answer 3

water pollution

Question 4

•Enrichment

• •Fertilization of a body of water by high levels of plant and algal nutrients (nitrogen and phosphorus)

•Increase in Biological Oxygen Demand (BOD)

• •Amount of oxygen needed by microorganisms to decompose biological wastes
• •As BOD increases Dissolve Oxygen (DO) decreases

Answer 4

sewages environmental problems

Question 5

•Includes human wastes, soaps, and detergents

Answer 5

the release of waste water from drains and sewers

Question 6

oligotrophic

Eutrophic

Answer 6

sewage eutrophication