The question asks about the primary environmental concern associated with permafrost thawing in the Arctic. Let's consider each option and its relevance:
- Displacement of the indigenous communities: While this is a significant social concern related to permafrost thawing, it is not primarily an environmental issue. The displacement occurs indirectly due to environmental changes but is not the core environmental concern.
- Release of Methane and Carbon dioxide: This is the correct answer. When permafrost thaws, organic material trapped in it decomposes, releasing greenhouse gases such as methane (CH4) and carbon dioxide (CO2). These gases contribute significantly to global warming and climate change, making it the primary environmental concern.
- Spread of invasive species: Thawing can alter habitats, potentially making them suitable for invasive species. However, while this is a concern, it is not as widespread or critical as the release of greenhouse gases.
- Increase of UV radiation: This is not directly related to permafrost thawing. UV radiation levels are influenced more by ozone layer conditions than permafrost activity.
The release of methane and carbon dioxide from thawing permafrost represents a positive feedback loop, where increased emissions from thawing lead to higher temperatures, causing more permafrost to thaw. This exacerbates global climate change.
Thus, the primary environmental concern linked to permafrost thawing in the Arctic is the release of Methane and Carbon dioxide.
Important Questions from Climate Change
"Climate Action Tracker", which monitors the emission reduction pledges of different countries is a:
Consider the following statements :
- "The Climate Group" is an international non- profit organization that drives climate action by building large networks and runs
- The International Energy Agency in partnership with the Climate Group launched a global initiative "EP100".
- EP100 brings together leading companies committed to driving innovation in energy efficiency and increasing competitiveness while delivering on emission reduction goals.
- Some Indian companies are members of EP100.
- The International Energy Agency is the Secretariat to the "Under2 Coalition".
Which of the statements given above are correct?
-
(a) 1, 2, 4 and 5
1, 3 and 4 only
- 2, 3 and 5 only (d) 1, 2, 3, 4 and 5
Which of the following is not a greenhouse gas?
- Choose the indicators of global warming from the following:
A. Warming of ocean water
B. Earthquake
C. Melting of ice cover
D. Rise in sea level
E. Nuclear plant outbreak
Choose the correct answer from the options given below : - Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): Climate change events such as droughts tend to significantly impact pregnant women's health.
Reason (R): During periods of drought, inadequate access to water, contaminated water sources, leads to a recurrence of fever, and gastroenterological illness among pregnant women.
In the light of the above statements, choose the most appropriate answer from the options given below:
