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Science Vocabulary

Across
To divest or clear forests or trees.
A grassy plain in tropical and subtropical regions.
A large naturally occurring community occupying a major habitat.
Includes lakes, ponds, rivers, streams, and wetlands.
A branch of biology that deals with the geographical distribution of plants and animals.
Water containing a large amount of salt.
A tidal mouth or large river.
Down
The act of adapting.
The gradual movement of earths surface through geological time.
A natural elevation of earths surface rising more or less.
An introduced alien, exotic, non indigenous, or non native species.
The weather conditions prevailing in a general or over a long period.
A permantly frozen subsoil.
Refers to the upper layer or habitat zone.
The coniferous evergreen forest of subarctic lands.