What is the purpose of a reference point?
91013✔ 16
Some life forms move so slowly that their movement cannot be detected by normal observation. The best way to determine any movement is by placing a mark at some point, and observing any change in position from it. Why is this true?
01✔ 234
✔ 02345
212325✔ 2729
greater thanless than✔ equal to
Read both quotations on the right, and then answer the question.What can you infer from the two quotes?
17✔ 19212325
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