Water that freezes into ice, thaws back into water and then freezes, again in the crack of rock cause which type of weathering

i think it is the third one.

i believe the answer is: returns on investments, no wages

people who belong in upper class society would most likely get there by obtaining multiple source of income, which a certain percentage of ownership for businesses. since most of them are job creator, they would most likely get their money from profit, not wages.