The four major depth zones are:

_________ is the proportion of a material that is made up of spaces.

Most near earth objects burn up in the ____________.

__________ is the temperature air must reach in order to become saturated.

The subscapularis muscle performs which of the following actions?

Lightning forms when:

Why does precipitation form when air moves up a mountain?

What are the three compositional layers in the Earth’s interior?

Which clouds are associated with rain?

Which of the following is not one of the elements the National Weather Service uses to define severe weather?