Watch this video C 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:
β’ make observations or inferences
β’ ask questions
. construct hypotheses and make predictions
β’ test hypotheses
β’ analyze results
Your investigation can address any question you have about backpacks and student's health that you choose.
Answers: 1
Biology, 21.06.2019 20:00
2points what is the term for a female reproductive cell? a. egg b. chromatid c. allele d. fertilization
Answers: 2
Biology, 22.06.2019 15:00
Viruses can be transmitted through air, water, food, insect bites, and direct skin contact. once a virus gains entry into the body, it invades a host cell in order to? a. synthesize antibodies for defense b. deactivate the host cell's defenses c. access cell processes for reproduction d. metabolize host proteins and grow
Answers: 1
Watch this video C about the stresses on the body caused by carrying heavy backpacks. Then design an...
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