Which of the following statement is incorrect regarding the Thawing permafrost?
1
Permafrost is a type of ground that remains at or below 0°C for at least two consecutive years.
2
Thawing permafrost in the Arctic is leading to the release of industrial pollutants, according to a recent study.
3
The pollutants being released due to thawing permafrost include heavy metals like mercury and persistent organic pollutants.
4
Thawing permafrost does not contribute to the global warming effect.