Geography, 22.08.2019 07:30 Claysn9094
Early humans used rocks as tools to make other things as well as to construct buildings. why was it better for them to use rocks than another material such as wood?
Answers: 2
Geography, 23.06.2019 12:50
Which revelation resulted from the observation of the spectrum of different galaxies? a. there were more galaxies whose spectrum was blueshifted b. there were no galaxies whose spectrum was redshifted c. there were more galaxies whose spectrum was redshifted d. there were no galaxies whose spectrum was blueshifted
Answers: 3
Early humans used rocks as tools to make other things as well as to construct buildings. why was it...
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