Why have the rules governing building on permafrost changed?

A) Perafrost used to be permanent

B) Expanding population has forced buliding on permafrost.

C) Permafrost has expanded near population centers

D) International commissions have held joint symposiums.

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23 September, 21:10

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Koen Love · Answer 1

Permafrost used to be permanent. Due to increased temperatures (global warming), permafrost is thawing in areas where it once was permanently frozen.

Why have the rules governing building on permafrost changed?A) Perafrost used to be permanentB) Expanding population has forced buliding on permafrost.C) Permafrost has expanded near population centersD) International commissions have held joint symposiums.