Question

30. Amount of which greenhouse gas in air is maximum and goes on increasing? a) Carbon dioxide
b) Nitrous oxide
c) Ozone
d) Methane.
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Answer 1

Answer:

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Explanation:

Carbon Dioxide

Carbon dioxide accounts for most of the nation's emissions and most of the increase since 1990. Transportation is the largest source of greenhouse gas emissions in the United States, followed by electricity generation

Answer 2

Answer:

a) Carbon dioxide

Explanation:

• The majority of the nation's emissions, as well as the majority of the rise since 1990, are due to carbon dioxide( $CO_{2}$ ) . Transportation, followed by power generation, is the major source of greenhouse gas emissions in the United States. In the previous few years, per capita emissions have fallen modestly.

• Total radiative forcing — the warming influence on the climate – from long-lived greenhouse gases has increased by 43% since 1990. According to data from the US National Oceanic and Atmospheric Administration cited in the WMO Bulletin, $CO_{2}$ is responsible for around 80% of this.