The answers are 1.C, 2.A, 3.B
Answer: The geologic time scale is divided based on the major changes in the earth’s surface and climate, and the other thing that divides them is the extinction of species. The appearance and disappearance of fossils also help influence this division.
Explanation:
The answer to that question is true
Explanation:
main idea of a paragraph is the primary point or concept that the author wants to communicate to the readers about the topic. Hence, in a paragraph, when the main idea is stated directly, it is expressed in what is called the topic sentence.