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active layer
noun
- (in Arctic or subarctic regions) the layer of soil, above the permafrost, that thaws during the summer.
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Example Sentences
Add the “Fresh Sat – Recent” and “Fresh Sat- Cloudfree” options to your active layers.
From Outside Online
In the formation of the organs of sense the nervous layer shews itself throughout as the active layer.
From Project Gutenberg
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