There are three main types of rocks: sedimentary, igneous, and metamorphic. Each of these rocks are formed by physical changes—such as melting, cooling, eroding, compacting, or deforming—that are part of the rock cycle. Sedimentary rocks are formed from pieces of other existing rock or organic material.
I believe the term refers to architectural styles which draw inspiration and influence from forms seen in nature. Or, architecture that is built to blend seamlessly into natural settings like cliffsides or forested areas.
My uncle hurts me sometimes
During the French Revolution, it was mainly the Third Estate that paid the taxes. The tax system before the Revolutionary, many people such as the bibles and the clergy were exempted from taxes. Therefore, it was up to the peasants, wage earners and business classes, etc that had to pay for them