Which of these greenhouse gases does not occur naturally?
a. Carbon dioxide
b. Freon 11
c. Methane
d. Nitrogen oxides
       
How much carbon is released into the atmosphere through the burning of fossil fuels each year?
a. 50 million tonnes
b. 350 million tonnes
c. 1 billion tonnes
d. 5.5 billion tonnes
       
How much carbon is released each year into the atmosphere due to land-use changes and deforestation?
a. 1.5 billion tonnes
b. 1 billion tonnes
c. 700 million tonnes
d. 100 million tonnes
       
How is methane produced by humanity?
a. In the production of natural gas and oil
b. Through the raising of livestock
c. Through the decomposition of organic waste in landfills
d. All of the above
       
Greenhouse gases are linked to climate change. By how much do scientists estimate that the average global surface temperature could increase by 2100?
a. 0.5 to 1.0 degrees Celsius
b. 1.0 to 3.5 degrees Celsius
c. 3.5 to 5 degrees Celsius
d. more than 5 degrees Celsius
       
Sea-level rise has been touted as a result of global climate change. What is the main reason for the rise in sea levels?
a. Increasing temperatures are melting the polar ice caps
b. Increasing temperatures are melting glaciers.
c. Increasing temperatures in the oceans are causing the thermal expansion of seawater.
d. Run-off of surface water is increasing.
       
In the next century it is estimated that sea levels will rise by as much as:
a. 25 centimetres
b. 50 centimetres
c. 1 metre
d. 2 metres
       
The projected sea level rise in the next century will place how much of the Netherlands underwater?
a. 1 percent
b. 3 percent
c. 6 percent
d. 9 percent
       
Drivers can help the environment by keeping their cars:
a. Cleaner - to reduce emissions of greenhouse gases
b. Fine-tuned - to reduce air pollution
c. Full with fuel - to avoid surprises caused by climate change
d. In garages - to keep them safe
       
By recycling paper, cardboard, glass or metal, an average family could reduce their annual carbon emissions by up to:
a. 1 tonne
b. 2 tonnes
c. 5 tonnes
d. 10 tonnes
       
The Energy Star label that can be seen on many products is a symbol of
a. energy efficiency
b. reduced energy use
c. cost savings
d. all of the above
       
Telecommunications reduce the energy required for transport. True or false?
a. True
b. False
   


 
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