Kepler's Laws of Planetary Motion. While Copernicus rightly observed that the planets revolve around the Sun, it was Kepler who correctly defined their orbits.
Sorry about the holds, copied it from google...
Answer:
3 molecules
Explanation: i got it right on the test, also because the 2 other ones are compounds because they have hyrdogen and oxygen attached and molecules just have particles of one element attached
Answer: Scientists make designs based on engineering knowledge and
then make it available for public use.
<span>The expression CaCO3 → CaO + CO2 is an example of a chemical equation, and it is a textbook one.</span>
