Question

Which of the following best describes a way in which human activities affect the level of greenhouse gases in the atmosphere?

Using aerosol sprays increases the amount of ozone (O3) in the atmosphere.

Burning fossil fuels decreases the amount of water vapor (H2O) in the atmosphere.

Deforestation increases the amount of carbon dioxide (CO2) in the atmosphere.

Using appliances that absorb radiation decreases the amount of chlorofluorocarbons (CFCs) in the atmosphere.

Answer 1

The answer is B

Answer 2

I believe the correct answer from the choices listed above is the second option. Human activities affect the level of greenhouse gases in the atmosphere by burning fossil fuels which decreases the amount of water vapor (H2O) in the atmosphere and increasing CO2 levels. Hope this answers the question.