The space shuttle is orbiting Earth. Which two motions combine to make the space shuttle move in its orbit?

The biosphere of the earth is made up of what compound? organic or inorganic?

Due tomorrow which would have a lower ph, a 0.1 m solution of a strong base or a weak base? why? which would have a higher ph, a 0.1 m solution of a strong base or a weak base? why?

Is hydrogen gas a reactant or product