Answer:
Economic, Environmental and political.
Explanation:
Permanent move from one country to another due to various reasons is called migration. Throughout history people has moved from one place to another to explore their world. Migration has impacted world culture since its beginning.
There are three main causes for migration, It falls into three categories: Economic, Environmental and political. While speaking of migrations experts talk about push and pull factors.
The factors that push people out of an area are called push factors while the factors that pull people toward an area is called pull factor. Ex. while talking about the environment lack/depletion of natural resources can be a push factor while availability of land at some other place can be a pull factor.
An outward shift in demand will occur if income increases, in the case of a normal good; however, for an inferior good, the demand curve will shift inward noting that the consumer only purchases the good as a result of an income constraint on the purchase of a preferred good.
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Because that can poison our drinking water, also the animals and plants that we eat are being affected by this because of the polluted water.
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B is the answer to the question
