1. a. write or type the sentence that is the topic sentence of the paragraph.

In expository writing, a topic sentence is a sentence that summarizes the main idea of a paragraph. It is usually the first sentence in a paragraph. Also known as a focus sentence, it encapsulates or organizes an entire paragraph.

Explanation:

i guess the cause and effect would show how being around the smoke(the cause) can have negative effects on the body.

explanation:

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