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Verdich [7]
2 years ago
7

A scientist wants to study the effect of vitamin C on colds. He gave 1000 mg of vitamin C per day to 100 people. What would be t

he best control?
A. Give the control group a pill similar to vitamin C but containing no vitamin C (a placebo)
B. Give the control group 2000 mg of vitamin C per day
C. Give the control group orange juice every day
OD. Give the control group nothing.
O E. Give the control group 1000 mg of another brand of vitamin C per daY
Biology
2 answers:
Flura [38]2 years ago
8 0

Answer:

D

Explanation:

Give the control group nothing. They are going to have to use their own blood system to fight the cold. The difference in results will be if Vit  C produces better results than the nothing group.

Anton [14]2 years ago
5 0
D, I’m assuming that’s their is a another so you give on group nothing and the other group the vitamin C
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3 years ago
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Dmitry [639]

Answer:

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A) product idea

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Answer: B

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7 0
3 years ago
What happens in chemosynthesis?
klio [65]
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6 0
3 years ago
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Point A is the same distance from the epicenter as point B. Using what you know about the movement of waves, how would you
never [62]

A.  The waves would be exactly the same at points A and B.

Explanation:

The seismic waves at both point A and B would be exactly the same at the two points.

Seismic waves are elastic waves that spreads out concentrically in all directions from their source.

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  • In a seismic station, the p-waves or primary waves arrives first before the s-waves or secondary waves.
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Learn more:

Locating the position of an earthquake brainly.com/question/11292835

#learnwithBrainly

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3 years ago
What does this mean?
saw5 [17]
What does what mean?
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3 years ago
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