State which of the fjfnel8cv )r:en 47z i13u jfo(ollowing is not a greenhouse gas.

  Figure: Atmospheric carbon dioxide levellaw-titf*uqu m+;p m73j*:l ys

The above data obtained from Mauna Loa show trends in atmospheric $CO_2$ concentrations. Suggest a conclusion that can be made from this graph.
I.
There is an annual fluctuation of carbon dioxide concentration in the atmosphere.
II.
There is a continuous increase in the average concentration of carbon dioxide in the atmosphere over the years.
III.
Increased use of fossil fuels has caused an increase in carbon dioxide in the atmosphere as recorded in Mauna Loa.

  Figure: Public opinions on the causes of climatgl5n/ 0g; cqyse change


Use the Figure to identify which of the following countries has the lowest percentage of its population that deny climate change is happening.

  Figure: Feedback loop for 9i-vcp( ok. ylu h8dd7the greenhouse effect

State which of the following correctly describes the feedback type shown in the loop.

  Identify an effect of rising atmospheric carbon dioxide concentratii1i-qm (v uxa-ons on marine ecosys x ui(qai1--mvtems.

  State which is not true regarding:4q9tafyd:jsi /d 9c r greenhouse gases.

  Figure: Permafrost and ice1wuz1l(i n9m58v8roc /l dfjt showing cracks


Scientists have been studying the effects of global warming for some time now, and are worried about the thawing of frozen ice and permafrost in the Arctic region. The image above was taken from a helicopter and shows the crack pattern in permafrost.

Suggest what may be of concern to scientists.
I.
There is frozen organic matter in the Arctic which contains ancient bacteria and viruses.
II.
With the thawing of ice and organic matter, more carbon dioxide will be released into the air.
III.
The melting of permafrost in the Arctic will cause the release of methane.

  Describe the emissions of methane, a potent gree5ersz) 7x5evwnhouse gas.

I.
Methane is emitted during the extraction of natural gas, coal and oil.
II.
Methane is released into the atmosphere from cattle farms and other agricultural practices.
III.
Methane is short-lived in the atmosphere and is converted to carbon dioxide and water.

  Scientists predict that global warming will have devastating effects i0l. 3dkno+e u3 rzde0bn the future. 3r0do . dubeen3lzk+ 0List some consequences of global warming.

I.
Coastal flooding and loss of coastal cities
II.
Bleaching of coral reefs
III.
Increased spread of tropical diseases

  Figure: Energy flow showing the greenhou.6 fe s4-xdwl:ffj lk3se effect

Identify which of the arrows in the figure represent energy that has no impact on the greenhouse effect.

  
Suggest an explanation for the annual fluctuations of carbon dioxide in the atmosphere.

  Identify which of the fof33- yhhpl6v*e xm6qyqe3 lq u-*6oxk llowing characteristics describe the process of climate chang36lq u f6mqye*exqo*x- k6phl-3vyh 3e.

I.
It occurs naturally.
II.
It is influenced by fluctuations in the sun’s energy.
III.
It is affected by the amount of greenhouse gasses in the atmosphere.
IV.
It can describe a change over both very short and very long periods of time.

  Figure: Public opinions on the 9ke 0q5;kmugtcauses of climate change

The current population of Canada is about 39,000,000. About 5,000,000 would be too young to be considered for an opinion.

Estimate how many Canadians do not think climate change is mostly caused by humans.

  Figure: Causes and effects 9((l aonz zzf(of air pollution
Identify the two chemicals shown in the Figure that are also significant causes of the greenhouse effect and climate change.

  Deduce which of the following sets of descriptions is correct.ijh k: mjvy/ 8;vga3n8

  Determine which of the following sta1aea sx ygm zpo9;4vu lkr.)30tements is not true.