The use of fossil fuels, such as coal, oil, and natural gas, is a concern because they release harmful gases like carbon dioxide when burned. These gases contribute to air pollution and climate change by increasing the Earth’s temperature. Fossil fuels are also non-renewable, meaning they will eventually run out. Continued use can lead to environmental damage, and finding cleaner, renewable energy sources is important for a sustainable future.

This question related to Chapter 11 Science Curiosity Class 6th NCERT.
From the Chapter 11. Nature’s Treasures.
Give answer according to your understanding.