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9 Cards in this Set
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- Back
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a sharp decrease in the number of species in a relatively short period of time
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extinction event/mass extinction/extinction-level event (ELE)
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In order to get a "mass extinction," you have to exceed the _____
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background extinction rate
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Is the planet Earth in peril?
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No, the planet is not in peril, but the people/things living on it are.
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What is the most important greenhouse gas?
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CO2, carbon dioxide
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At what point was there a sharp increase in the population?
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the industrial revolution
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Why is population growth a problem for global warming?
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If one person does something it is not a problem, but there are now more people that are doing more things that cause more problems with the climate.
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When did we start introducing more CO2 into that atmosphere?
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When we started using the stored energy that was put away.
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At present, CO2 is 0.038% of the atmosphere, meaning there is a _____ greenhouse effect
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weakened
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What produces methane hydrates?
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bacteria in the ocean
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