Question

1. choose the correct answer.

how can public transportation, like buses and trains, help conserve energy?
it has no impact on energy conservation.
it adds pollution in the air.
it reduces the number of cars using fossil fuels.
it uses more fossil fuels.

1. choose the correct answer.

for the most part, most ____ energy resources put out fewer pollutants into the air.
renewable
nonrenewable
mainstream
high - level

Explanation:

Question 7

To determine how public transportation helps conserve energy, we analyze each option:

• "It has no impact on energy conservation" is incorrect because public transport does affect energy use.
• "It adds pollution in the air" is about pollution, not energy conservation, and public transport generally reduces pollution compared to individual cars, so this is wrong.
• "It reduces the number of cars using fossil fuels" is correct. Fewer cars mean less fossil fuel consumption, thus conserving energy.
• "It uses more fossil fuels" is incorrect as public transport is more fuel - efficient per passenger than individual cars.

We analyze the options for energy resources and their pollution levels:

• "Renewable" energy resources (like solar, wind, hydro) generally produce fewer pollutants. For example, solar panels don't emit pollutants during operation.
• "Nonrenewable" resources (like coal, oil) are major sources of air pollutants (e.g., coal - fired power plants emit CO₂, SO₂).
• "Mainstream" is not a term related to the pollution level of energy resources.
• "High - level" is not a relevant term for classifying energy resources by pollution output.

Answer:

C. It reduces the number of cars using fossil fuels

Question 8