In paragraphs, a stated main idea is called the topic sentence.
Answer:
Firstly, one of the main goals of an anthropologist is to understand the fossil record of early humans and their ancestors as well as the archaeological record of more recent prehistoric societies. Secondly, to understand how we adapt to different environmental conditions and how we vary as a species.
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The volume of the base of the region enclosed by the parabola is; V = 9
<h3>Integral Volume of a Solid</h3>
The length of each cross-section is determined by the horizontal distance (parallel to the x-axis) from one end of the parabola to the other.
Thus;
y = 3 - 2x²
Making x the subject gives us;
x = ±√[(3 - y)/2]
Thus;
The horizontal distance is;
√[(3 - y)/2] - (-√[(3 - y)/2])
⇒ 2√[(3 - y)/2]
The area of each cross-section is simply the square of the section's side length, so the area would be;
A = (2√[(3 - y)/2])²
A = 6 - 2y
Thus, volume is;
V = 
Solving this gives V = 9
Read more about integral volume of solids at; brainly.com/question/14845570