iGCSE Biology 4b: Deforestation, pollution & global warming

The greenhouse effect is a natural phenomenon:

• True

• False

Evidence suggests that changes in global temperature are linked to human manipulation of the carbon cycle:

• True

• False

What is the main source of human-caused greenhouse gas emissions?

• Deforestation

• Burning of fossil fuels

• Agricultural practices

• Volcanic eruptions

Enhanced global warming occurs as a result of absorption of which type of radiation?

• Gamma

• Ultra violet

• Far red

• Infra red

Burning fossil fuels produces a large volume of:

• Methane

• Carbon monoxide

• Carbon dioxide`

• Water

Agriculture produces a large volume of:

• Methane

• Carbon monoxide

• Carbon dioxide`

• Water

Which of the following absorbs the greatest amount of carbon dioxide?

• Atmosphere

• Oceans

• Rivers

• Rainforest

A consequence of enhanced greenhouse effect is:

• Decreased flooding

• Reduced desertification

• Ice cap freezing

• Coral bleaching

Acid rain tends to be a consquence of:

• Deforestation

• Mining

• Buring fossil fuels

• Agriculture

Which of the following is not a consequence of enhanced greenhouse effect?

• Habitat loss

• Decreased intensity of extreme weather events

• Increased migration

• Reduced biodiversity