By definition, mountains must:

Sedimentary rocks are classified as:

Strain is the deformation caused by forces applied to a given area of rock (stress).

Most basement rock formed during the Archean and Proterozoic eons.

What is the angular deviation of a fault or tilted bed called or measured as?

Foliated metamorphic rocks, like slate or gneiss, have minerals arranged in a parallel fashion.

Chemical weathering is most effective when conditions are cold and arid.

​Most of the organisms that have ever existed are now extinct.

Metamorphic activity is most common along what type of plate boundaries?

Earth’s early atmosphere was very rich in oxygen (O2).​