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The top documents tagged [lakes freshwater]
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lakes freshwater
Aquatic info Saltwater: AKA marine. 3.5% salt +35 ppm concentration. Brackish water is less salty than marine, but too salty to be freshwater. Places where.
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Comparing Ecosystems Terrestrial vs. Aquatic Ecosystems Lesson 38.
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3.1 How Changes Occur Naturally in Ecosystems Natural selection - process where individuals with advantages are better able to reproduce and pass along.
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