Human Population and Pollution - Test #1

Question 1

True/False:
Humans need to interact with many different forms of life and non-living environment for survival

Answer 1

True

Question 2

How do human interactions affect other organisms?

Answer 2

• Some organisms depend on human interactions
• The way we change our physical environment will determine the survival of all living things

Question 3

Is the population growth stable or unstable?

Answer 3

The population growth is unstable

Question 4

What has advanced medical education and knowledge allowed for?

Answer 4

It has allowed for the death rate from disease to decrease

Question 5

What is the result of ecosystems not being able to produce enough food?

Answer 5

Starvation results

Question 6

How have some ecosystems increased food production?

Answer 6

Some ecosystems have increased food production by increased science discoveries and technologies

Question 7

What is a pollutant?

Answer 7

A pollutant is something put into the water or soil making it unfit for living conditions

Question 8

How do many substances become pollutants?

Answer 8

Many substances become pollutants when natural systems can not break them down

Question 9

What is a carcinogen?

Answer 9

A substance that causes cancer

Question 10

Water Pollution…

Answer 10

Interferes with our ability to obtain pure water for things like drinking, washing, etc.

Question 11

Water Pollution:
Pollutants?

Answer 11

• Thermal pollutant (heat)
• Pesticides
• Sewage
• Heavy metals (washing detergents and PBCs)

Question 12

Why are phosphates in the water bad?

Answer 12

Because phosphates are eaten by algae, increasing the algae population, algae die, algae decompose, algae pull O2 from H2O and then suffocate aquatic animals

Question 13

Air Pollution…

Answer 13

• Interferes with our ability to obtain clean air (for breathing)
• Produces residues that are destructive to buildings and machinery

Question 14

Air Pollution:
Pollutants?

Answer 14

• Smoke
• Ash
• Carbon dioxide
• Carbon monoxide
• Organic vapour
• Soot

Question 15

What does to much Carbon dioxide cause?

Answer 15

To much Carbon dioxide causes warming greenhouse effect

Question 16

What creates acid rain?

Answer 16

Acid rain forms when Sulfur, Nitrogen oxides and water vapour combine. Acid rain is harmful to organisms

Question 17

How does smog form?

Answer 17

Smog forms when smoke, gas, and fog is warmed by sunlight

Question 18

Why are CFCs bad?

Answer 18

CFCs bind to the ozone, ozone depletes. Depletion of the ozone leads to things like cancer, decreased immunity, etc.

Question 19

Soil Pollution…

Answer 19

Interferes with our ability to obtain water from wells, reduce recreation areas, and may kill soil decomposers

Question 20

Soil Pollution:
Pollutants?

Answer 20

• Organic and inorganic chemicals
• Solid waste and pesticides

Question 21

What are some results of negative human impacts?

Answer 21

• Some human activity has led to the extinction and endangerment for many plant and species

Question 22

What is the difference between an endangered species and an extinct species?

Answer 22

Endangered - a species that may soon disappear w/o human protection

Extinct - a species that has already disappeared entirely

Question 23

Overhunting and Exploitation…

Answer 23

• Unrelated hunting, fishing and trapping have resulted in extinction
• The exploitation of wild plants and animals for products have disrupted ecosystems and endangered populations