Earth Science

2. To make observations, an observer must always use
(1)experiments
(2)the senses
(3)proportion
(4)mathematical calculations
Is it (2)?

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  2. 👎
  3. 👁
  1. Right!

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    2. 👎
    👤
    Ms. Sue
  2. Thanks!

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    2. 👎
  3. mathemathical caculations

    1. 👍
    2. 👎
  4. experiments

    1. 👍
    2. 👎
  5. Their sense

    1. 👍
    2. 👎

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