Answer: Short periods
Explanation:
The species must have only lived for a short period of geologic time.
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Answer:

A strong thesis statement expresses one main idea.
Readers need to be able to see that your paper has one main point. If your thesis statement expresses more than one idea, then you might confuse your readers about the subject of your paper.
Explanation:
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The correct choices are
-graphics are popular, but design is difficult to master
-lessons improve skill, so i take several classes each month
-pottery sounds interesting,but i’m not sure i can handle the mess,
compound sentences have 2 independent clauses usually joined by a comma semicolon or conjunction
Answer:
C. To explain why the culture honors cattle.