Challenege Question 3 - The CNG vs. Wood Debate - For Air and Atmosphere
🚌 Challenge 3: Why Choose CNG?
In big cities, buses use CNG (Compressed Natural Gas) instead of wood or coal. Looking at the fuel section in your text, why is CNG considered a "better" fuel for a crowded city? Think about what happens when these fuels burn.
🌟 Sample Ideal Answer:
CNG is better because it is a clean-burning fuel. When wood or coal burn, they produce a lot of smoke, ash, and solid particles that pollute the city air. CNG, which is mostly Methane, burns more completely and produces much less pollution. Also, CNG can be easily supplied through pipes directly to where it is needed, making it more efficient for city transport!
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