Question

It is said, “CO2 contributes to global warming.” Explain.


NCERT Class VIII
Science - Exemplar Problems

Chapter 18. Pollution of Air and Water

Answer 1

CO2 survives in the atmosphere for a long time—up to many centuries—so its heat-trapping effects are compounded over time. Of the many heat-trapping gases, CO2 puts us at the greatest risk of irreversible changes if it continues to accumulate unabated in the atmosphere—as it is likely to do if the global economy remains dependent on fossil fuels for its energy needs

Answer 2

CO2 has the ability to trap heat from sun. As it traps heat and stores it in the atmosphere only, the temperature of the atmosphere increases and leads to global warming.