Answer:Rivers help geographer to understand how civilizations developed in several main ways.
1. If there is a river near an old civilization, you know where the civilization got their water from.
2. The civilization could have used the river for exporting and importing goods.
3. The civilization could have gone extinct or failed because of the river flooding.
Explanation:
Answer: d.the type of behavior children exhibits in school.
The dependent variable in the experiment is the variable a researcher is interested in. The researcher would like to know if the independent variable will affect the dependent variable.
In the example, the number of times a family eats together is the independent variable. The dependent variable which the researcher is interested in is the type of behavior children exhibits in school.
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Explanation:
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