Which of copernicus's ideas did galileo confirm? moons are held in rotation by gravity. the earth is the center of the solar system. the stars are burning masses. celestial bodies rotate each other?

answer: a.letter a . . letter "correct answer"

b.letter c . . letter b "not b'

c.letter a . . letter b

d.letter b . . letter a

explanation:

which elements do geologists measure to determine the age of an organism’s remains? check all that apply.

carbon-14

nitrogen

carbon-12