Question

How are burning of fossil fuels and volcanic eruptions similar with respect to their effects on the carbon cycle?

a. Both remove carbon from the atmosphere.

b. Both add carbon to the atmosphere.

c. Both add carbon to the lithosphere.

d. Both remove carbon from the lithosphere

onlyanswer a, b, c or d.

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Answer 1

Answer:

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Answer 2

The burning of fossil fuels and volcanic eruptions both add carbon to the atmosphere. (Option b)

• The lithosphere has no role in the carbon emitted by burning fossil fuels and volcanic eruptions.
• The lithosphere deals with only organic (carbon from living matter like plants and animals) and inorganic carbon (carbon from non-living matter like rocks).
• Burning fossil fuels and volcanic eruptions emit carbon in the form of carbon dioxide which directly reaches the atmosphere.
• But the carbon emission due to volcanic eruption is negligible when compared to the carbon emission due to human activities.
• The amount of emissions is too large that it has reached an excess level that causes global warming.