Question 6 (4 points) Earth\'s atmosphere can cause global warming because molec

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Question 6 (4 points) Earth's atmosphere can cause global warming because molecules in the atmosphere trap heat radiated from Earth's surface B) warm air cannot escape, as in a greenhouse plants absorb co2 plants release CO2 E) fossil fuels release heat when they are burned Question 7 (4 points) Which of the following may result in a positive feedback mechanism that would intensify climate change? Warmer temperatures result in increased evaporation of water, leading to an increase in cloud cover. A) B) At higher temperatures, trees increase rates of photosynthesis A large volcano emits huge quantities of sulfate aerosols into the atmosphere. warmer temperatures result in the melting of permafrost. An increase in rainfall results in increased plant growth. Question 8 (4 points) Keeling's reports from Mauna Loa demonstrated A) that as distances from cities decreased. CO2 concentrations increased B) an increase in tropospheric CO2 from the 1950s to present C) that sediments deposited on the seafloor can yield clues about past climates ) that CO2 levels have been stable over the last 40 years E) the presence of El NIAzO 0 Question 9 (4 points) All of the following statements about mangroves are true EXCEPT A) mangroves protect shorelines from tsunamis and storm surges B) mangroves have root systems that can act as snorkels for getting oxygen from the air C) mangrove forests are often destroyed to build shrimp aquaculture facilities 0 O mangroves and kelp are usually found growing in the same area 0 E) mangroves are adapted to growing in a salty environment

Explanation / Answer

Answer 6 : A) molecules in the atmosphere trap heat radiated from the Earth's surface

Answer 7 : A) Warmer temperatures result in increased evaporation of water, leading to an increase in the cloud cover.

Answer 8 : B) an increase in tropospheric CO2 from the 1950s to present.

Answer 9 : D) Mangroves and kelp are usually found growing in the same area.

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