Which water source becomes polluted as it travels over the earth?
ponds
groundwater
oceans
O runoff

Florian discovers a rock that is broken into pieces. each piece has several bands. which type of rock does florian predict these pieces will change into when subjected to heat and pressure? igneous magma metamorphic sedimentary

Which of the following statements is true? 1. the mantle of the earth is made of solid nickel and iron. 2. the crust of the earth is made of solid nickel and iron. 3. the inner core is made of solid nickel and iron.

If you have a difficult time knowing where your hand is without looking at it you may be having a problem with your what ?