What is the breakdown ,mechanically, chemically, or biologically, of large rocks and minerals at the surface of earth?

Solve for r in the formula v = ir, when i = 5 and v = 15.

Choose the false statement. a. some organisms fossilize when frozen or dried out. b. bacteria can destroy dead plants and animals. c. it is common for a plant or animal to fossilize when it dies. d. rapid burial under small-sized sediment increases the chance for fossilization to occur.

What term describes the government positions that officials who passed the civil service exam became a part of?