The normal greenhouse effect is essential for sustenance of life on Earth as it helps in maintaining the average temperature of the earth to

Q. The normal greenhouse effect is essential for sustenance of life on Earth as it helps in maintaining the average temperature of the earth to

A.            15 ℃

B.            33 ℃

C.            – 18 ℃

D.            50 ℃

Answer: 15 ℃