Answer:
III. The 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.
A. Social animals are those animals which interact highly with other animals, usually of their own species, to the point of having a recognizable and distinct society.
1. Whales play a vital role in the marine ecosystem where they help provide at least half of the oxygen you breathe, combat climate change, and sustain fish stocks.
Explanation:
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