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6th ch. 1 sect. 3 classnotes + vocab

Puzzle Type: Educational
Teacher: cf
Across
precautions must be followed when conducting any investigation.
test the effect of one factor on another.
are possible explanations for why something occurs.
Down
was developed to help scientist investigate their questions.
communicate with one another to share important information.
anything represented of an object or an event used as a tool for understanding the natural world.