Answer:
a metal and a nonmetal element
Explanation:
Answer:
Rotation: spins on its axis
Revolution: travels around another object
Explanation:
The Earth rotates on its axis, while it revolves around the sun.
The moon revolves around the Earth.
Answer :- Electrical energy
Explanation :-
Geothermal energy is too large scale
solar energy is inefficient
Nuclear does more harm
When MgO and H2O react they form Magnesium Hydroxide Mg(OH)2
