The problem with self selection in research is that it makes it makes causal interpretations difficult.
<h3>What is self selection?</h3>
This is a type of bias that occurs often times in social science research. In this type of bias, the respondents cause it because they are totally allowed to decide things for themselves.
The respondents are left to decide for themselves whether they want to participate in the research or not.
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Answer:
Decomposers.
Explanation:
Decomposers are organisms that break down dead or decaying organisms. In doing this they carry out the natural process known as decomposition. They also break down the waste of animals.
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Answer:
Most countries have trouble producing enough food for their people, and must import food from other countries.
Explanation:
The given statement is true as the evolutionary theorists accepted that the growth of the societies was based on the similar or different stages of social development.
<h3>What is social development?</h3>
Social development refers to the betterment of the standard of living of the people residing in the society.
In the year the 1800s, there was no theory that fully describes the aspects relating to changes in societies. As a result, the theorists trusted that societal growth entirely depends on similar or distinct stages of social development.
Therefore, the theories of the 1800s explained the distinct or same stages of social development which would be the result of the growth of societies.
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