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Fittoniya [83]
3 years ago
11

You have been asked to help a top nutrition researcher conduct human experiments on vitamin

Biology
1 answer:
Nostrana [21]3 years ago
8 0

The answer would be Prevent yourself from knowing what was in the pill bottles, and distributed the bottles randomly to the subjects

When researcher know which group got the treatment and which group got placebo, they might be biased. It will be better if the researcher is "blinded" and ask third party to help labeling the drug. The drug should be distributed randomly to makes the subject in control and treatment group as similar as possible.


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Vikki [24]

Answer: D) The amount of air in a room never changes.

Explanation: Equilibrium is defined as the state in which the concentration of reactants and products is constant or the rate of forward direction is equal to the rate of backward direction.

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b) A blade of grass grows taller : the plant gets taller that means the reaction is taking place in one direction and hence the reaction is not in equilibrium.

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d) The amount of air in a room never changes: the amount of air does not change as the amount of air leaving the room is same as that of the air entering the room and hence the  reaction is in equilibrium.



3 0
3 years ago
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Please please help ASAP
inysia [295]

Answer:

kmmemdkdkkdkdkdkdkdkdkdkd

Explanation:

mmxmxmxmxmxmxmxmmxxmxmxmmxmx

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