Abolt of lightning striking a person usually causes very serious injury or death.

Lightning strikes can produce severe injuries, and have a mortality rate of between 10% and 30%, with up to 80% of survivors sustaining long-term injuries.[3] These severe injuries are not usually caused by thermal burns, since the current is too brief to greatly heat up tissues;[citation needed] instead, nerves and muscles may be directly damaged by the high voltage producing holes in their cell membranes, a process called electroporation.[citation needed]

In a direct strike, the electrical currents in the flash channel pass directly through the victim. The relatively high voltage drop around poorer electrical conductors (such as a human being), causes the surrounding air to ionize and break down, and the external flashover diverts most of the main discharge current so that it passes "around" the body, reducing injury.

what was the conclusion

explanation:

since conclusion is the over all summarize.

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.