Answer: A region in southwest Asia and North Africa.
Explanation:
The mentioned area consists of fertile subregions of Mesopotamia and the Levant. The mentioned area was crucial for developing many ancient civilizations since the rivers Euphrates, Tigris, Jordan, and Nile flow through the area. It was in the valleys of the mentioned rivers that some of the greatest civilizations in history developed. The name of the region was given by the American archaeologist Henry Breasted because the entire area resembles a crescent and is very fertile.
Answer:
the third variable problem
Explanation:
Third variable: In psychological research, the term third variable is also referred to as the confounding variable and is defined as a factor except for the independent variable in research that may cause an effect to the result.
Third variable problem: The third variable i.e, the confounding variable is responsible for making a mistake in the causal relationship between the other two variables present in an experiment.
In the question above, the given statement combination of factors is known as the third variable problem.
1. Universe
2. Milky way galaxy
3. Solar system
4. Earth
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