Topic 2: Pesticides and Biomagnification

Question 1

In what ways to humans affect quality of air and water?

Answer 1

1. Run off from fertilizers & otherpollutants contaminate our water supplies(eutrophication)
3. Industrial activity & the burning of fossil fuels leads to acid precipitation, lower airquality and climate change

Question 2

What are the two types of chemical waste?

Answer 2

• Non-persistant (degrades naturally in the environment)
• Persistant (Does not naturally degrade)

Question 3

What is a heavy metal?

Answer 3

A metal with a density higher than water

Question 4

What is a pesticide?

Answer 4

chemical substances which destroys or deters a pest

Question 5

What is biomagnification?

Answer 5

When toxins move up the food chain and the concentration increases in each organism

Question 6

What are the two major consequeances of fossil fuel burning?

Answer 6

• Climate change
• acid precipitation

Question 7

What causes acid precipitation?

Answer 7

Sulfates and nitrates combine with moisture to produce acid rain

Question 8

Are acids proton donors are acceptors?

Answer 8

Acids are proton donors (H+)

Question 9

What ions are formed in acid and base solutions?

Answer 9

Acid solutions - H+ ions
Base solutions - OH ions

Question 10

What does pH stand for

Answer 10

Power of hydrogen or Potential hydrogen

Question 11

What is liming?

Answer 11

Adding calcium carbonate to an acidic substance