State which of the foy9vicg-z3 g m+tt;) wellowing is not a greenhouse gas.

  Figure: Atmospheric carw4 m11z 1l qy8a to3esm-/blc*kaxg :zbon dioxide levels

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 thre7, n ip609 t0pamjcfe causes of climate 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 the x3:gn2 ff1bc9vp i .szgreenhouse effect

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

  Identify an effect of rising atmospheric carbon dioxide concentrations on maria3fudsa5; vsn b*;:wy ne ecosystesbu;a* n:fyw;5a v3sdms.

  State which is not true regarding greenhouse ga, frre ;s:d8gfses.

  Figure: Permafrost and ice showing craljxpfat4 mrz2 3 63so8cks


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 b5;q.g tqno4.rh n8wg methane, a potent greenhouse 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 in 73 ;j :vq8n8cnvmzviu the future. List some consequences;8n8u:3z vc vnm7j qvi 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 *:q/lyo6bz iq- k:vah greenhouse 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 following characteristics descj +x:h j uejgq2ke+ty q4g7+r)ribe the process of climate ch y+ )teh2je xqjg+kuj:7gq+r4ange.

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 causes of climate chabp,9hv 43z v igy;:qtunge

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 eff .p. w3nuwal sd;bp2xr8f*fn ,qie)7uects 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 2mome) l rrf:+descriptions is correct.

  Determine which of thek3sl*el*z+ 9f9p rqta/;dinr following statements is not true.