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Watch this video about the stresses on the body caused by carrying heavy backpacks. Then design an
investigation about the effect of carrying backpacks on students' health using these steps of the scientific method:
• make observations or inferences
• ask questions
• construct hypotheses and make predictions
• test hypotheses
• analyze results
Your investigation can address any question you have about backpacks and student's health that you choose.
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What is the membrane that sheath of schwann cell containing cytoplasm and nucleus that encloses myelin
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Bio molecules are essential to all living things. which biomolecule is “d” from the table
Answers: 3
Type your response in the box.
Watch this video about the stresses on the body caused by carrying h...
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