Question

Which of the following is a recently originated problem of environment?

• A. Global warming
• B. Ozone depletion
• C. Greenhouse effect
• D. All of these

Answer 1

The correct option is D All of these

Global warming is the gradual warming of the earth's surface and atmosphere that causes a change in the earth's climate. It is due to the increase of greenhouse gases like carbon dioxide in the atmosphere. Ozone layer depletion is thinning of the protective ozone layer in the stratosphere. Its depletion is a result of CFC emission and pollution. The greenhouse effect is the process in which the radiation from a planet's atmosphere is unable to escape and rather warms the planet's surface to a higher temperature. Thus, all three problems are man-made and have recently come into existence. Hence, option D is correct.