The correct answer is - A) Permafrost used to be permanent.
The permafrost used to be permanent until recently, so using certain techniques of building on it functioned properly. But with the climate changes that are becoming more and more evident, the permafrost is no longer permanent, but instead, it is either defrosting in some part of year and then forming again, or has been totally absent from some regions in the present.
That has caused changes in the rules governing building on permafrost. The reason for the changes is that the old techniques do not work properly anymore, and the permafrost changes are making change in the landscape, making big damages on the infrastructure in meantime.
C. the lithosphere and i hope this helps
Answer:
B
Explanation:
It allowed all other countries into Canada to trade ,hence ,it boots their economy to it's current status
Answer:
During construction habitat destruction may occur where a habitat is removed to make way for a new development. Plants and sessile animals in these areas are usually directly impacted generally resulting in alteration or reduction in biodiversity.
