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4.5 Biology Vocab

Across
Microscopic organisms live in aquatic areal
Ecosystem in which water either covers the soil or is present at or near the surface for at least part of the year
Photosynthesis can not occur
Down
The sunlit region near the surface in which photosynthesis can occur
Animals that live on or in rocks and sediments on the bottom of lakes, streams and oceans
A special kind of wetland formed where a river meets the sea