Question

If Earth's atmosphere did not contain greenhouse gasses and was only composed of Nitrogen and Oxygen, by how much would Earth's temperature change? Select one: a. increase by 1°C b. decrease by 1°C c. increase by 10°C d. decrease by 60°C e. Earth's temperature would not change by the elimination of greenhouse gases. Which of the following is not a true statement about global climate change? Select one: a. Carbon Dioxide is the most abundant greenhouse gas b. The concentration of carbon dioxide in Earth's atmosphere has been steadily increasing since the start o c. Earth's oceans are taking in the majority of the additional heat kept in the earth-atmosphere system due d. Earth's oceans are warming, rising, and becoming more acidic. the industrial revolution. to global warming e. Large volcanic eruptions cause temporary global cooling

Answer 1

Answer: 1- Option (D)

              2- Option (A)

Explanation:

The green house gases plays a significant role in the earth's global temperature. In absence of green house gas, the earth would have been very much cold and life would would be difficult to exist. The average global temperature would have been about -15°C to 25°C. So the most favorable answer given here is that the earth's temperature would have decrease by about 60°C.

Carbon dioxide (CO₂) is not the most abundant green house gas. It is the second most abundant. The present composition of CO₂ in the atmosphere is about 0.04% by volume. A small increase in the CO₂ level, can lead to a global rise in the temperature. Hence, the above statement is false.