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Section 15.5 What is the key concept for this section? Define climate change tipping point, and list five possible examples. Summarize the projections of scientists on how climate change is likely to affect each of the following: ice and snow cover, permafrost, sea levels, severe drought, extreme weather events, biodiversity, food production, human health, economies, and national security.

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Environmental Science (MindTap Cou...

15th Edition
G. Tyler Miller + 1 other
Publisher: Cengage Learning
ISBN: 9781305090446

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Chapter
Section
BuyFindarrow_forward

Environmental Science (MindTap Cou...

15th Edition
G. Tyler Miller + 1 other
Publisher: Cengage Learning
ISBN: 9781305090446
Chapter 15, Problem 8CR
Textbook Problem
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Section 15.5

What is the key concept for this section? Define climate change tipping point, and list five possible examples. Summarize the projections of scientists on how climate change is likely to affect each of the following: ice and snow cover, permafrost, sea levels, severe drought, extreme weather events, biodiversity, food production, human health, economies, and national security.

To determine

The important concepts discussed in section 15.5. The definition of climate change tipping point with five examples. A brief discussion about the estimated effects of the climate change on ice and snow covers, sea levels, permafrost, drought, extreme weather events, biodiversity, human health, national security, various economies, and food production

Explanation of Solution

The key point discussed in section 15.5 is how the atmospheric temperature and resulting climatic change impact the earth and the life on it.

Climate change tipping point is the threshold value, and if the climate change crosses the tipping point, then the climate change can last for hundreds of years.

The five possible examples of tipping point are :

(i) The rise of atmospheric carbon level above 450 ppm.

(ii) The collapse of the Amazon rain forest is also a tipping point example.

(iii) Melting of ice from western Antarctic ice sheet.

(iv) Melting of all Arctic summer sea ice.

(v) Death of phytoplankton and a decrease in the ability of the ocean to absorb CO2.

The effect of the climate change on the Ice and snow covers is because the increase in temperature has resulted in excessive melting of glaciers.

Due to the melting of the Ice in Alaska, the permafrost, which is made up of organic material, has started decomposing and producing a large amount of methane gas.

The climatic changes can result in more severe and prolonged drought condition with almost 45% of the population facing the drought situation...

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