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Overview: Students will observe and conduct an experiment to see whether differences in salinity (the environment) have an affect on the hatching rate and survival of brine shrimp. Author/Source: UC Museum of Paleontology Grade level: 3-5 Time: One class period for initial set up Approx. 10-15 minutes for daily observations. Concepts: Environmental changes may affect an organism's ability to survive. Scientists base their ideas on evidence from the natural world. Scientific ideas may change with new evidence. Teacher background: Nature of Science Adaptation

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