Temperature is a measure of the average energy of motion of an objects particles. Sometimes, if enough heat is added to or removed from an object, it can change its state. Which of the following can occur if the temperature decreases in a system? A. A solid becomes a liquid

B. A liquid becomes a gas

C. A solid becomes a gas

D. A liquid becomes a solid

a. a primary source combines several different accounts of an event. b. a primary source generally benefits from having been written after an event.

explanation:

because natural gas is colorless, odorless, and tasteless, distributors add mercaptan (a chemical that smells like sulfur) to give natural gas a distinct unpleasant odor (it smells like rotten eggs). they locate the types of rock that are likely to contain natural gas deposits.