Which THREE of the following remove carbon dioxide from the atmosphere?Group of answer choicescombustion of biofuels (e.g., biodiesel)combustion of fossil fuelsdissolution in ocean waters and the formation of limestoneforest firesphotosynthesisrespiration and decayvolcanic eruptionsweathering of silicate minerals
Question
Which THREE of the following remove carbon dioxide from the atmosphere?Group of answer choicescombustion of biofuels (e.g., biodiesel)combustion of fossil fuelsdissolution in ocean waters and the formation of limestoneforest firesphotosynthesisrespiration and decayvolcanic eruptionsweathering of silicate minerals
Solution
The three processes that remove carbon dioxide from the atmosphere are:
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Dissolution in ocean waters and the formation of limestone: The ocean absorbs carbon dioxide from the atmosphere. Some of this carbon dioxide reacts with the water to form carbonic acid. Over time, this acid reacts with minerals to form limestone, which effectively stores the carbon dioxide.
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Photosynthesis: Plants absorb carbon dioxide from the atmosphere during photosynthesis. They use the carbon to grow, effectively storing it in their biomass.
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Weathering of silicate minerals: This is a natural process where carbon dioxide from the atmosphere reacts with silicate rocks, forming new minerals and sediment. This process effectively removes carbon dioxide from the atmosphere and stores it in a solid form.
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