A group of students found metamorphic rocks near a campsite. The presence of metamorphic rocks is most likely evidence of
A: high pressure

During subduction, one tectonic plate is forced below another. The subducting plate is forced into the
A: asthenosphere.

Which is a learned behavior?
A: A chimpanzee digs for termites with a stick.

What causes the blue color of the sky?
A:
scattering of light by matter in the atmosphere