What factors determine the type of rocks that forms underground? 1.The amount of heat present
2.The amount of water present 2 out of 3 numbers are correct
or 3.The type of minerals that combine

When water freezes, it . contracts expands

The circles, or orbits, for electrons are called energy levels. each level can hold only a certain number of electrons. add electrons to each level until you can't add any more. how many electrons can each level hold?

How does a gymnosperm prevent itself from pollinating the same tree