Both acids and bases produce a part of a water molecule. Bases dissociate hydroxide (–OH) ions and acids, hydrogen (H+) ions that when combined form water. Both are also very corrosive when they are strong enough that they fully dissociate in water.
Anthracite is so hard and pure it is also referred to as a metamorphic rock. renewable resource metamorphic rock hot bituminous coal dirty fuel
C:change in the earth's orbit correlate to changes in climate.
