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mezya [45]
3 years ago
15

The difference between an observational study and an experiment is that

Social Studies
1 answer:
denis-greek [22]3 years ago
5 0

Answer:

While experimenting researcher can record, test or control the group and while observational study researcher can't do that

Explanation:

An experimental study can be under the control of someone who is doing the research or experiment.

The researcher can also manipulate the experiment and in the observational study, there are no experiments.

The observational study requires the research observing of something, this observing includes what happened in the past, what is saw in the past and what is now.

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What was a common belief held by Frederick Douglass, William Lloyd Garrison, and John Brown?
Gnoma [55]

Slavery should be abolished- this common belief was held by Frederick Douglass, William Lloyd Garrison, and John Brown.

Option: C

Explanation:

Frederick Douglass, William Lloyd Garrison and John Brown are active socialist, reformer and writer. All of them belongs to the era which deals with the slavery system. All of them strongly oppose the slavery. They were in favor of determinism. Under their supervision American civil war was continued.

Slavery is a system in which people forcefully brought from other countries to follow the orders of higher classes in the society. Economically weak and deprived class, the tribals from various parts of America forced to be slaves.

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3 years ago
Pain relief that occurs when a person believes a pill or procedure will reduce pain is known as ________.
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<span>This is known as the Placebo effect the actual cause of relief seems to come from endorphins. The common element in these methods may be their ability to stimulate the production of endorphins.</span>
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4 years ago
What do you mean by general vocational skill? ​
Sindrei [870]

Answer:

they are the skills that are needed by people for a particular job.

4 0
3 years ago
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What impact does coal and steel make today?
tatiyna

Answer:

Air pollution from coal-fired power plants is linked with asthma, cancer, heart and lung ailments, neurological problems, acid rain, global warming, and other severe environmental and public health impacts.

Coal provides 30% of global primary energy. It is used to generate 41% of global electricity. It is also used to produce 68% of the world's steel and is a key source of energy in energy-intensive industries, such as aluminum and cement production.

Steel production has a number of impacts on the environment, including air emissions (CO, SOx, NOx, PM2), wastewater contaminants, hazardous wastes, and solid wastes. The major environmental impacts from integrated steel mills are from coking and iron-making.

Steel is sturdy enough that it resists the damage caused by natural disasters, such as tornadoes, hurricanes, and earthquakes. Steel buildings are much more resistant to fire and termites. Because of steel's greater durability, the owner of such a building could get a better deal on insurance.

found this online

Explanation:

hope this helps

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3 years ago
What was the purpose of the Berlin Conference?
Virty [35]

Answer:

b. to establish rules for european colonization of africa

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3 years ago
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