ECOLOGY
CHEMICAL CYCLES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Carbon dioxide is released during photosynthesis
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Carbon compounds rarely exist in the gaseous state
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Carbons sinks include forests and oceans
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The carbon dioxide concentration in the atmosphere is reduce by cutting trees
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Carbon is concentrated in igneous rocks
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Detailed explanation-1: -Forests are typically carbon sinks, places that absorb more carbon than they release. They continually take carbon out of the atmosphere through the process of photosynthesis. The ocean is another example of a carbon sink, absorbing a large amount of carbon dioxide from the atmosphere.
Detailed explanation-2: -The correct answer is b. Photosynthesis is the process through which plants “fix” carbon from gaseous carbon dioxide to produce sugar.
Detailed explanation-3: -A carbon sink absorbs carbon dioxide from the atmosphere. The ocean, soil and forests are the world’s largest carbon sinks. A carbon source releases carbon dioxide into the atmosphere. Examples of carbon sources include the burning of fossil fuels like gas, coal and oil, deforestation and volcanic eruptions.
Detailed explanation-4: -Changing Ocean Chemistry The ocean acts as a “carbon sink” and absorbs about 31% of the CO2 emissions released into the atmosphere according to a study published by NOAA and international partners in Science. As atmospheric CO2 levels increase, so do the CO2 levels in the ocean.
Detailed explanation-5: -Coal, oil, natural gases, methane hydrate and limestone are all examples of carbon sinks. After long processes and under certain conditions, these sinks have stored carbon for millennia.