How does the sun's energy affect Earth's atmosphere?
FIGURE 6
Earth's atmosphere is a system made up of
many different parts.
Communicate In the space below, draw
a picture or a diagram that helps you under-
stand the relationship between the concepts
in the word bank. Explain your diagram to
a classmate.

The sun's radiation warms the earth's atmosphere and surface and becomes heat energy.

Explanation:

quite an interesting way to teach topic sentences, because the answer to this question is the best definition of a topic sentence that one can present, it is as if answering the questions taught you how to do it, this is some real teaching, it is terribly well-done.

the topic sentence in this paragraph is:

topic sentences writers stay on track and keep a paragraph from becoming an aimless collection of sentences about an idea.

which incidentally tells you what a topic sentence should be.

what is the question ?