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Lessons below address this concept: Environmental changes may affect an organism's ability to survive.
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Lesson Title (Description) Grade Level Lesson Type
Coping with Environmental Differences
Students will observe and conduct an experiment to see whether differences in salinity (the environment) have an effect on the hatching rate and survival of brine shrimp.		 3-5 Classroom activity
 

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Spanish translation of Understanding Evolution For Teachers from the Spanish Society of Evolutionary Biology.