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Physics 8 Online
OpenStudy (anonymous):

which of the following is always an important part of an experiment? a. making a working model b. observing things in nature c. making drawing of thing observed d. identify and controlling variables

OpenStudy (anonymous):

The answer is "d", without controlling the variables, the results are meaningless. a. is not necessary in most cases b. may or not apply in the experiment c. is a good idea but not necessary

OpenStudy (anonymous):

Thanks

OpenStudy (anonymous):

B & D

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