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earnstyle [38]
3 years ago
6

John D. Rockefeller originally made his fortune in which industry?

Social Studies
2 answers:
madam [21]3 years ago
4 0
A: oil/petroleum ind.
Fed [463]3 years ago
4 0
He made his fortune from the oil business
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A researcher administers a standardized test to the students in a school testing a new program as well as to students in a simil
kogti [31]

Answer:

It not a true experiment, not at all use.  

Explanation:

A true experiment is a type of experiment that is thought to be the most accurate type of experimental research. The true experiment supports the hypothesis using statistical analysis. We can be called that true experiment is the only experiment that works on cause and effect relationships.  

  • There would be a criterion for a true experiment:
  • There would be a control group and experimental group.  
  • Researchers manipulated variables.
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<u>Example of the true experiment: </u>

There is an example of placebo effects. There was two groups such as a control group and an experimental group. The control group received a placebo, that looks like medicine, not exactly a medicine. the people were just because they think they are receiving treatment. If the control group more reduction in anxiety than the experimental group then we can say that the placebo effect and reduction in anxiety are not caused by the drug.

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3 years ago
How did the Missouri compromise attempt to settle the issue over the spread of slavery?
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Answer:

i think this is the answer. drawing a line from Missouri's southern border, dividing free and slave portions across the rest of the Louisiana Purchase.

Explanation:

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Serjik [45]
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What is economic specialization?
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I would say D since it makes the most sense.

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They are most likely to be <span>maximum-security prisons.
</span><span>maximum-security Security prisons are specifically created to defend criminals that deemed to be really dangerous.
Such as the leader of Large crime syndicate, the perpetrator of mass killings, high-level terrorists, etc.</span>
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