Question

Select the statement(s) that accurately demonstrate an example of air pollution.


Ground level ozone reacts with nitric oxides from burning fossil fuels, forming smog.


Sulfur oxides and nitric oxides react with water vapor in the atmosphere and cause acid rain.


CFCs react with water in the atmosphere, forming smog.


Water reacts with carbon dioxide and makes the oceans more acidic.


Human activity like deforestation and burning fossil fuels increases carbon dioxide levels in the atmosphere.

Answer 1

The following statements accurately demonstrate examples of air pollution:

1. **Ground level ozone reacts with nitric oxides from burning fossil fuels, forming smog.**
- This statement highlights the formation of smog, a type of air pollution resulting from chemical reactions in the atmosphere.

2. **Sulfur oxides and nitric oxides react with water vapor in the atmosphere and cause acid rain.**
- This statement describes how pollutants can lead to acid rain, which is a consequence of air pollution.

3. **Human activity like deforestation and burning fossil fuels increases carbon dioxide levels in the atmosphere.**
- This statement reflects how human activities contribute to the accumulation of greenhouse gases, resulting in air pollution.

The other two statements do not explicitly describe air pollution:

- **CFCs react with water in the atmosphere, forming smog.** (While CFCs are pollutants, they primarily contribute to ozone layer depletion rather than smog formation through a reaction with water.)
- **Water reacts with carbon dioxide and makes the oceans more acidic.** (This refers to ocean acidification, a consequence of increased CO2, rather than a direct example of air pollution.)