Answer:
remove contamination; pollution ; test ground water and dirt .
Coal, petroleum, and natural gas are considered nonrenewable because they can not be replenished in a short period of time
Answer:
friction can be used to slow things down but it can also be harmful because it can cause fire to start
<span>When a red giang complete helium fusion and collapses, it becomes a white dwarf. The correct option is C. White dwarf are very dense stars that are usually the size of a planet. It is a stellar core reminant which mainly made up of electron degenerated matters; its mass is comparable to that of the sun while its volume is comparable to that of the earth. </span>
