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Why is experimentation an important part of the scientific method?

Classify each of the following as an observation (O), a hypothesis (H), or an experiment (E):

a. A big log in the fire does not burn well.

b. If I chop the log into smaller wood pieces, it will burn better.

c. The small wood pieces burn brighter and make a hotter fire.

d. The small wood pieces are used up faster than burning the big log.

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