Normal Greenhouse Effect Is Important for the Sustenance of Life on Earth as it Has Increased the Earth’s Surface Temperature By HomeGreenhouse Effect MCQsNormal Greenhouse Effect Is Important for the Sustenance of Life on Earth as it Has Increased the Earth’s Surface Temperature ByQ. Normal Greenhouse Effect Is Important for the Sustenance of Life on Earth as it Has Increased the Earth’s Surface Temperature ByA. 15 ℃B. 50 ℃C. – 18 ℃D. 33 ℃Answer: 33 ℃