Suggest a few measures for controlling carbon dioxide levels in the atmosphere.

Explanation

**Step-by-Step Solution:**

1. **Reduce Petrol Consumption in Automobiles:**
- Encourage the use of carpools where multiple people share a ride to reduce the number of vehicles on the road.
- Promote the use of public transportation systems such as buses and trains, which can carry many passengers at once, thereby reducing the overall fuel consumption.

2. **Use Alternative Fuels:**
- Shift from traditional fossil fuels like coal and petroleum to cleaner alternatives such as Compressed Natural Gas (CNG) and Liquefied Petroleum Gas (LPG). These fuels produce fewer carbon emissions when burned.
...