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which of the following is/are characteristic(s) of a good hypothesis?
a. it is falsifiable
b. it is testable
c. it is based on previous research
d. all of the above

The tilt of the earth's axis of rotation is responsible for the a) ocean's tides. b) size of the moon. c) brightness of stars. d) earth’s seasons.

Melissa is interested in her family tree and how her family has changed over its many generations. melissa probably more closely resembles

Ican determine the molar mass of an element by looking on the under the atomic mass for the element. for example the molar mass of phosphorus is 30.974 grams/mole. avogadro’s number tells me the amount of representative particles in 1 mole of any substance. this means 12.011 gram sample of carbon and a 32.0 gram sample of sulfur have the same number of atoms.