When a current-carrying wire is wrapped around an iron core, what can it create? A. an aurora
B. a magnet
C. a generator
D. a motor

How does a scientist the government? a. the scientist tells people in society what to do. b. the scientist determines the policies that the government spends money on. c. the scientist provides unbiased information to the government. d. the scientist makes laws based on his or her research results.

Which substance is a steroid? cholesterol fatty acid monosaccharide trans fat

Find the mass, in grams, of 5.00*10^23 molecules of f2