<span>The difference is approximately $15,000 per year. High school graduates tend to earn quite a bit less than their college-educated counterparts. This discrepancy only increases as the levels of education discrepancies increase, as well. Students with graduate degrees earn quite a bit more than those with undergraduate degrees.</span>
3.1 people per square kilometre
External validity
Sigmund freud's psychoanalytic theory was based primarily on descriptive data from a few case studies. Critics question how well the experiences of these unusual individuals represent others. The concern referred to is that this type of research may lack external validity.
External validity is the extent to which the information and theories of a study can be generalized to other conditions or to other people. People, places and times are the three major threats ( factors that could be wrong) to external validity
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D. Keeps the talk focused on the topic
Answer:
Among the European immigrants and their descendants, pioneer farmers settling the grasslands of the American West often built houses of sod, while early settlers of the eastern forest built wooden structures like log cabins. This suggests that building materials <u><em>are strongly influenced by local resources</em></u>.
Explanation:
When the European settlers first came to the American colony, they build their settlements based on the availability of local resources. This means that they would build their houses/ huts with whatever materials they could get their hands on, and not based on what they want.
While the farmers settling in the grasslands of the American West built houses made of sod, the ones in the east would use logs to build their houses. This shows that the availability of resources determines the type of houses or settlements built.
Thus, the correct answer is the last/ fifth option.
