Q. Consider the following statements:
1. A thermokarst lake is a freshwater lake that is formed in a depression formed by thawing ice-rich permafrost.
2. Methane has a longer atmospheric lifetime than carbon dioxide.
Which of the statements given above is/are correct?
Answer: A
Notes:
Statement 1: A thermokarst lake is a freshwater lake that is formed in a depression formed by thawing ice-rich permafrost.
Statement 2: The statement is incorrect. Methane has a shorter atmospheric lifetime than carbon dioxide. It is the primary contributor to the formation of ground-level ozone which is a hazardous air pollutant. Source: https://www.thehindu.com/sci-tech/energy-and-environment/newly-formed-lakes-in-alaska-is-releasing-bubbles-full-of-methane/article65937494.ece
