The "greenhouse effect" refers to:
What gas is produced by the burning of fossil fuels?
To the best of your knowledge, roughly how much carbon dioxide was in the atmosphere in the year 1850?
Roughly how much carbon dioxide is in the atmosphere today?
Which picture best represents how the amount of carbon dioxide in the atmosphere has changed over the past 500 years?
If we were to stop burning fossil fuels today, the amount of carbon dioxide in the atmosphere would decrease almost immediately.
If we were to stop burning fossil fuels today, global warming would stop almost immediately.
Which of the following countries emits the largest total amount of carbon dioxide?
Which of the following countries emits the most carbon dioxide per person?
Which of the following statements is correct?
Over the past 100 years, has the speed of glacier melting increased, decreased, or stayed the same?
Of these causes, which one has contributed the most to sea level rise so far?
How much do scientists estimate that global sea levels rose from 1900 to 2000?
Which of the following causes coral bleaching?
Which of the following causes ocean acidification?
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