Fill in the following blanks with suitable words :
Burning of wood and coal causes ………………….. of air

Explanation

To fill in the blank in the statement "Burning of wood and coal causes ………………….. of air," we need to analyze the effects of burning these materials.

1. **Understanding the Process**: When wood and coal are burned, they undergo a chemical reaction with oxygen in the air. This process is called combustion.

2. **Identifying the Products**: The main products of combustion of wood and coal are carbon dioxide (CO2), water vapor, and energy. However, incomplete combustion can also produce other harmful substances like carbon monoxide (CO) and particulate matter.

3. **Environmental Impact**: The release of carbon dioxide contributes to the greenhouse effect, which leads to global warming. Additionally, the other pollutants can degrade air quality.

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