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Health, 04.05.2020 23:30, amayarayne5
Why are biodegradable bags being made but they are not found in grocery stores? They are cheaper than paper bags and they are far more eco friendly! What is wrong with the company's making the biodegradable bags?
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Wheeled coach ambulance uses an interactive computer program to develop and document its products. what is it called?
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Health, 22.06.2019 15:20, timozy95
[120 total points] (public health) in one of the largest human experiments ever conducted, in 1954 a randomized controlled trial was run to see whether a vaccine developed by a doctor named jonas salk was effective in preventing paralytic polio. a total of 401,974 children (ages 6–9), chosen to be representative of those who might be susceptible to the disease, were randomized to two groups: 200,745 children (the control group c) were injected with a harmless saline solution (a placebo) and the other 201,229 children (the treatment group t) were injected with salk’s vaccine. what was the point of giving saline solution to the children who didn’t get the vaccine? explain briefly.
Answers: 2
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