Question

1. choose the correct answer. how can individuals help reduce air pollution? by driving more often by turning off lights and electronics when not in use by using more coal - powered appliances by increasing electricity use 2) choose the correct answer. how do trees help clean the air? they absorb oxygen from the atmosphere. they release carbon dioxide into the atmosphere. they have no effect on air quality. they absorb carbon dioxide from the atmosphere.

Explanation:

Sub - Question 1

To determine how individuals can help reduce air pollution, we analyze each option:

• Option "by driving more often": Driving more often (especially with gasoline - powered vehicles) increases emissions like carbon monoxide and hydrocarbons, so it increases air pollution, not reduces it.
• Option "by turning off lights and electronics when not in use": This reduces electricity consumption. If the electricity is generated from fossil - fuel - based power plants, less electricity use means less fossil fuel burning, which in turn reduces air pollution (e.g., less sulfur dioxide, nitrogen oxides, and particulate matter from power plants).
• Option "by using more coal - powered appliances": Coal - powered appliances burn coal, which releases a large amount of pollutants like sulfur dioxide, particulate matter, and carbon dioxide, increasing air pollution.
• Option "by increasing electricity use": As mentioned above, if the electricity is from non - clean sources, more electricity use means more pollution.

• Option "They absorb oxygen from the atmosphere": Trees perform photosynthesis, and during photosynthesis, they take in carbon dioxide and release oxygen, not absorb oxygen.
• Option "They release carbon dioxide into the atmosphere": Trees do release some carbon dioxide during respiration, but their main role in relation to air cleaning is photosynthesis where they absorb carbon dioxide. Also, the amount of carbon dioxide released during respiration is much less than the amount absorbed during photosynthesis.
• Option "They have no effect on air quality": Trees have a significant effect on air quality. They absorb pollutants like particulate matter (by trapping them on their leaves), absorb carbon dioxide, and release oxygen, so this option is wrong.
• Option "They absorb carbon dioxide from the atmosphere": During photosynthesis, trees use carbon dioxide from the atmosphere to produce glucose and oxygen. This process helps in reducing the amount of carbon dioxide (a greenhouse gas and a pollutant in terms of its role in climate change and air quality) in the air, thus cleaning the air.

Answer:

by turning off lights and electronics when not in use

Sub - Question 2