Biology, 23.10.2020 21:40 Royalty0703
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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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Biology, 22.06.2019 01:00
The bacteria found in soil is usually harmful and measures are taken to remove any traces of microorganisms. true or false
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Biology, 22.06.2019 06:00
Which kingdom includes some organisms that have no nucleus and can live in an environment with an extremely high salt content
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Watch this video about the stresses on the body caused by carrying h...
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