Question

According to some scientists, which is a cause of global warming?

decrease of nitrous oxide
increase in cloud cover
decrease of methane gas
increase in carbon dioxide

Answer 1

Answer:

increase of carbon dioxide.

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Answer 2

The cause of global warming is an increase in carbon dioxide.

• Global warming is defined as the increase in temperature in the earth's atmosphere due to an increased level of carbon dioxide, CFC and other pollutants gases.
• These gases allow the light to come into the earth's atmosphere but do not allow it to go outside it and hence heating the earth's atmosphere.
• Global warming is caused due, CFC used in refrigerators, industrial chemical release, water vapour and volcano eruptions etc.
• CFC, deforestation, burning of fossil fuels are man-made causes of global warming while water vapour is a natural cause.