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Tycho Brahe ( 1546 - 1601 ) was a Danish astronomer known for his accurate astronomical and planetary observations. Tycho tried to produce a model with the best of both Ptolemy ( earth-centered solar system ) and Copernicus ( sun-centered solar system ).
Answer: B ) observation.
Answer: a good level of body fat can be found using your weight and height as a reference.
Explanation:
D. The number of wave that pass a point in a given amount of time