Identify the main idea of the following passage.
The introduction of electric buses in urban areas has led to a noticeable reduction in air pollution. Cities that adopted electric fleets reported lower levels of nitrogen dioxide and particulate matter within six months.

Question

Identify the main idea of the following passage. 
 The introduction of electric buses in urban areas has led to a noticeable reduction in air pollution. Cities that adopted electric fleets reported lower levels of nitrogen dioxide and particulate matter within six months.

Answer

Electric buses contribute to cleaner urban air

Answer

Electric buses are difficult to maintain but important in today's era.

Answer

Electric buses are more expensive than diesel buses.

Answer

Electric buses are popular in urban areas in Europe.

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Identify the main idea of the following passage. The introduction of electric ...

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