Human Impact (Incomplete)

Question 1

What are greenhouse gases?

Answer 1

Gas molecules in the earth’s atmosphere that have three or more atoms.

Question 2

What is the source of CO2 emissions?

Answer 2

Human activities that involve burning fossil fuels (coal/petrol/diesel/oil/natural gas).

Question 3

What are the main human activities that produce CO2?

Answer 3

Electricity generation, transport and industries.

Question 4

What are the main sources of methane emissions?

Answer 4

Industries, agriculture and waste (from homes and businesses).

Question 5

Why is the greenhouse effect necessary for life on earth?

Answer 5

Without it, the earth would be too cold to support life.

Question 6

What are the effects of global warming?

Answer 6

Melting polar ice caps
Rising sea levels
Rise in sea surface temperatures
Increase in extreme weather conditions
Loss of biodiversity
Global food and water shortages
Sea water becomes more acidic 
Spread of disease
Desertification

Question 7

What is deforestation?

Answer 7

The permanent destruction of natural, indigenous trees and bushes by felling or burning.

Question 8

List the causes of deforestation.

Answer 8

Urbanization
Agriculture
Wood for fuel
Timber
Mineral mining
Traditional medicines

Question 9

What are the effects of deforestation?

Answer 9

Soil erosion and degradation
Floods
Loss of biodiversity
Disruption of water cycle
Global warming

Question 10

What is your carbon footprint?

Answer 10

The sum of all CO2 emissions resulting from your activities within a given period of time.