Nelson Science Perspectives 10
Nelson Science Perspectives 10
1st Edition
Christy C. Hayhoe, Doug Hayhoe, Jeff Major, Maurice DiGiuseppe
ISBN: 9780176355289
Textbook solutions

All Solutions

Section 9-4: Greenhouse Gases: Changing the Climate

Exercise 1
Result
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The anthropogenic greenhouse effect is the effect of greenhouse gases that were emitted as a result of human activity
Exercise 2
Step 1
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Percent increase = ( new – original) * 100 / original
Step 2
2 of 6
Carbon Dioxide = (384 – 280) * 100 / 280 = 37.1%
Step 3
3 of 6
Methane = (1.785 – 0.700) * 100 / 0.700 = 155%
Step 4
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Nitrous Oxide = (0.321 – 0.270) * 100 / 0.270 = 18.9%
Step 5
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b) Scientists are most concerned about the gases that not only act as greenhouse gases, but dissociate into water to form acidic rain which harms bodies of water
Result
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Percent increase = ( new – original) * 100 / original
Exercise 3
Result
1 of 1
Increases in atmospheric carbon dioxide lead to increases in average temperature since carbon dioxide is a greenhouse gas and greenhouse gases increase the Earth’s temperature due to the blanketing greenhouse effect
Exercise 4
Step 1
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a) a carbon sink is a region (often forested) where lots of carbon is used up in natural chemical processes. Forests are carbon sinks as they use carbon dioxide for photosynthesis to create energy and oxygen
Step 2
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b) By decreasing carbon dioxide concentrations, they can lower greenhouse gases, effectively cooling the Earth
Result
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a) a carbon sink is a region (often forested) where lots of carbon is used up in natural chemical processes. Forests are carbon sinks as they use carbon dioxide for photosynthesis to create energy and oxygen
Exercise 5
Result
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Industry has recently grown tremendously following the industrial revolution. This revolution was created by technological advancements of human activities. Industries often release lots of chemical byproducts such as carbon dioxide into the environment
Exercise 6
Result
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These temperatures may have occurred before, but the rate of temperature growth to these temperatures has not, which is the problem
Exercise 7
Result
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The model would only include sources of anthropogenic greenhouse gases, so any source that is human related
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