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iris [78.8K]
4 years ago
9

A study is said to have internal validity if the researcher can be relatively confident that ____.

Social Studies
1 answer:
Vlad [161]4 years ago
6 0
That changes in the independent variable caused changes in the dependent variable
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________ are frightening dreams that awaken a dreamer from REM sleep. ________ involve sudden arousal from sleep and an intense
jarptica [38.1K]

Answer:

Nightmares, Night terrors

Explanation:

Nightmares are dreams that cause feeling of unpleasantness, that cause fear, despair, anxiety and sadness. They occur during rapid eye movement sleep.

Night terrors are a sleep disorder that causes panic or dread in person in the first 3-4 hours of non rapid eye movement sleep. They are predominantly found to occur in children and decrease as they grow older.

5 0
3 years ago
What is the system called that supports the sides of an excavation?
S_A_V [24]
<span>It is called Shoring. Amid excavation, it gives well-being to laborers in a trench and accelerates unearthing. For this situation, shoring ought not be mistaken for protecting. Shoring is intended to avert fall where protecting is just intended to ensure specialists when breakdown happen. Solid structure and stone-building shoring, in these cases likewise alluded to as false-work, gives brief help until the point when the solid turns out to be hard and accomplishes the coveted quality to help loads.</span><span />
8 0
3 years ago
This New Deal program helped bring people electricity in certain areas of the country and created dams to stop the flooding of v
ozzi

Answer:

Tennessee Valley Authority

Explanation:

Tennessee Valley Authority was a program planned and implemented during the New Deal. It was applied in the country through a US federally owned corporation, which carried out works and activities capable of controlling floods by building dams and generating electricity for areas of the country that had no access to electricity. In addition, this program sought to create fertilizers in large quantities, to be distributed in the Tennessee Valley and to stimulate local agriculture, since this region was so affected by the great depression.

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3 years ago
In the video, the two stuffed animals that rode on the turntable had the same __________ but had different
Usimov [2.4K]

Answer:

Pelo  pero diferente

Explanation:

Saludos.

6 0
3 years ago
Give an example of the false sense of security that can come from using the "security by obscurity" approach.
Pani-rosa [81]
<span>An example of this is an application that runs in the background of a mobile device or computer. Because the user does not know the application is running, in theory they would not know how to exploit the software.</span>
5 0
3 years ago
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