Two body parts that are physically similar but have different functions in different species are called?

Analogous or convergent structure.

Explanation:

Analogous structures can be defined as structures that  have similar purposes but look completely different from each other. in other words it means that they serve the same functions in different species, but they are independently evolved. Examples of analogous structures are

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the answer is third world countries, take for instance china, they restricted each family with only one child,

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