EARTH SCIENCE
CLIMATE AND ENVIRONMENTAL CHANGE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The gas stops the escape of heat from Earth’s atmosphere.
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Carbon dioxide inhibits rainfall causing long droughts.
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The gas prevents plants from photosynthesizing.
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Carbon dioxide is highly toxic if inhaled.
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Detailed explanation-1: -Carbon dioxide is Earth’s most important greenhouse gas: a gas that absorbs and radiates heat. Unlike oxygen or nitrogen (which make up most of our atmosphere), greenhouse gases absorb heat radiating from the Earth’s surface and re-release it in all directions-including back toward Earth’s surface.
Detailed explanation-2: -Greenhouse gases, which also include water vapour and fluorinated gases, make the Earth a favourable place to live because they stop the Earth’s heat energy from escaping into space.
Detailed explanation-3: -The reason the atmosphere (including GHGs) stays attached to the earth is gravity. This is called the Hydrostatic Equilibrium.
Detailed explanation-4: -When there’s more CO2 in the atmosphere, it makes the atmosphere warmer by trapping heat. Since humans are adding more CO2 to the atmosphere, that helps explain why temperatures are increasing around the world.
Detailed explanation-5: -Rising carbon dioxide concentrations will decrease leaf stomatal conductance to water vapor. This effect could reduce transpiration. Rising carbon dioxide concentrations and rising global temperatures could change WUE.