QUESTION 21 A study was done to test the effectiveness of echinacea in upper respiratory infections. One group of infections was given echinacea, the other group was treated with placebos. a. We do not have enough information to make any determinations in this case b. Echinacea is only effective in the treatment of a virus, it cannot help with an infection. c. Level of infection is the explanatory variable in this case. d. Level of infection was the response variable in this case. e. None of these answers.
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Biology, 22.06.2019 10:20, XxDonaldTrumpxX452
The function of the excretory system is to control homeostasis and
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Biology, 22.06.2019 10:30, cordovamaria22
Which is a function of vascular tissue? a. to perform photosynthesis b. to transport water and nutrients c. to absorb minerals and sugar d. to interact with soil fungi
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Biology, 22.06.2019 10:30, imalexiscv
Coral have a symbiotic relationship with what in order to eat?
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Biology, 22.06.2019 15:30, allenpaietonp9v8sv
Modern computers can store about as much information as the human brain. true false its false i took the test
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QUESTION 21 A study was done to test the effectiveness of echinacea in upper respiratory infections....
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