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SCI 200-Unit 4 Challenge 2 Questions and Answers Rated A Which of the following is a scientific observation that supports the idea of a warming planet? a.) Earth's climate depends on the amount of plant and animal li ...

SCI 200-Unit 4 Challenge 2 Questions and Answers Rated A Which of the following is a scientific observation that supports the idea of a warming planet? a.) Earth's climate depends on the amount of plant and animal life. b.) Earth has been warming up slower than any other historical global temperature increase. c.) Historically, the earth's climate cycles between warmer and cooler periods. d.) There have only been warmer periods throughout Earth's history. ✔✔c.) Historically, the earth's climate cycles between warmer and cooler periods. Which of the following statements about the history of climate change on Earth is true? a.) Current climate change is largely due to increases in greenhouse gases in the atmosphere. b.) At the end of the last Ice Age, the global temperature was around 25 degrees cooler than it is today. c.) Changes in the Earth's atmosphere today are relatively large compared to atmospheric changes on early Earth. d.) In the past, these temperature changes have been sudden and species did not have the time to adapt. ✔✔a.) Current climate change is largely due to increases in greenhouse gases in the atmosphere. Of the options below, which is used by scientists as evidence of man-made climate change? a.) The growing number of endangered species b.) The descending sea levels c.) The steep increase in the incidence and severity of skin cancer d.) The melting of glaciers and polar ice caps ✔✔d.) The melting of glaciers and polar ice caps Human activities that contribute greenhouse gasses into the atmosphere include__________________. a.) using solar fuel and rural sprawl b.) burning fossil fuels and livestock grazing c.) operating with wind power fuel and suburban sprawl d.) utilizing geothermal fuel and abiotic practices ✔✔b.) burning fossil fuels and livestock grazing Carbon dioxide and methane are two of the worst greenhouse gases. Which of the following statements is specific to methane? a.) Deforestation has reduced the amount of this gas that

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