INTRODUCTION
Melting Permafrost :
How melting permafrost is contributing to global warming and threatening New Zealand ’ s native species
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By Jessica Cowie
INTRODUCTION
Permafrost : A layer of frozen sediment or rock that has been frozen for more than two consecutive years . In areas that are not overlain by ice permafrost can be found underneath a layer of soil , rock or sediment that unlike permafrost , thaws annually . This is know as the active