Question

If there was no $C{O}_2$ in the earth's atmosphere, the temperature of earth's surface would be ______________.

• A. As such
• B. Less than the present level
• C. Increase from present level
• D. independent upon oxygen amount of the environment

Answer 1

Answer: (B)

Less than the present level

$CO_2CO2$ layer around earth surface acts as insulator and does not allow heat of the earth to escape into space thus keeping the earth warm.

So, the correct answer is 'Less than the present level'