Which term specifically describes small chunks of rocks and debris in space that travel through the earth's atmosphere and hit its surface? meteorites meteoroids meteors meteorides

An ionic compound can conduct electricity when a it is dissolved in water b its crystals are ground into powder c it is in solid form d it is heated to just below its melting point

Which are causes of mechanical weathering? (check all that apply) a. acid rain b. plant growth c. animal actions d. carbon dioxide e. pressure release i chose b & e and got the question wrong.

How is the ideal mechanical advantage of a wheel and axle calculated?