Answer:
This all your answer of your question.
The correct answer is letter d. mountain men.
Mountain men are described as <span>explorers or adventurers, who dwells </span>inside the wilderness<span>. Mountain men </span>have been most common within the Rocky Mountains in North America <span>from </span>approximately<span> 1810 and throughou</span><span>t the </span>1880s.
Answer: Definitional approach
Explanation:
Definitional approach to categorization is the approach that is used making judgement about any object whether or not it belong to the category based on the definition of category.If category's definition go along with object then it is considered as member of category.
According to the question, fish category can have gill, scale or fins which creates issue in classification of them into fish category as per definition of fish.Thus, problem in using definitional approach for categorization occurs in this case.
The Flynn effect refers to the fact that IQ scores have increased from generation to generation in modernized countries.
<h3>What is the Flynn effect?</h3>
The Flynn effect is a term used to describe a secular rise in population IQ that was seen over the course of the 20th century. The changes happened quickly, with an average IQ point increase of three every decade for assessed intellect. The rise appeared to defy the old theory that IQs were dropping because of so-called dysgenic fertility, which is the negative relationship between IQ and fertility.
There has been concern that the Flynn effect was a transitory phenomenon reflecting an IQ boost from environmental factors that temporarily concealed an underlying dysgenic trend as the Flynn effect has recently decreased and reversed in various Western countries.
Learn more about Flynn effect here:
brainly.com/question/11772792
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