Which fossil fuel is an environment friendly fuel? Describe how it has been used in recent years in an effort to reduce pollution levels caused due to burning of fossils fuels?

Explanation

**Step-by-Step Solution:**

1. **Identify the Environmentally Friendly Fossil Fuel:**
- Among the fossil fuels, **natural gas** is considered the most environmentally friendly option. It produces fewer pollutants and greenhouse gases compared to coal and oil when burned.

2. **Discuss the Characteristics of Natural Gas:**
- Natural gas primarily consists of methane (CH4), which, when combusted, emits less carbon dioxide (CO2) and other harmful pollutants like sulfur dioxide (SO2) and particulate matter. This makes it a cleaner alternative to other fossil fuels.

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