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diamong [38]
3 years ago
8

To be valid, an experiment must not include A. only one variableB. a controlC. both a control and a variable, which are treated

in parallelD. more than one variable
Social Studies
1 answer:
tia_tia [17]3 years ago
3 0

Answer:

D

Explanation:

More than one independent variable makes an experiment unfair.

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algol13
Answer: Mandate of Heaven
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3 years ago
How does polk describe mexico in relation to the war
gogolik [260]

Answer:

For Mexico, this was itself a provocation, but Polk went further, sending U.S. Army troops to the area; he also sent a diplomatic mission to Mexico to try to negotiate the sale of territory. ... Mexican forces attacked U.S. forces, and the United States Congress declared war.

Explanation:

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3 years ago
The supreme court servers what important function in the us federal government?
Arisa [49]

Answer:

D)

Explanation:

That is the main function of the supreme court also i had the same question.

good luck!

5 0
3 years ago
Because you live up North, this year you want to prepare for the dark and cold winter months ahead before the seasonal pattern f
olchik [2.2K]

The correct answer to this open question is the following.

Although the question does not include options, we can say the following.

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One of the best options people can find to treat SAD or Season Affective Disorder is by taking therapy. In this case, light therapy is the best option.  This means that patience exposures to artificial light treatments. What happens in this scenario is that patients place a kind of device in the form of a box next to them. This box projects a type of "sunlight," trying to stimulate the chemicals on people's brains during the winter months. This way people can get better sleep or keep a better mood during the day.    

6 0
3 years ago
A state consists of four characteristics. which of the following can be constitute a state?
Lelechka [254]
B is the correct answer.
8 0
3 years ago
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