As Understood by Modern Geologists,the Principle of Uniformitarianism Implies That

Multiple Choice

As understood by modern geologists,the principle of uniformitarianism implies that ________.

A) the Earth has always had the same basic appearance that it has today
B) igneous,metamorphic,and sedimentary rocks are uniformly mixed throughout the crust
C) physical processes observed today (such as erosion and volcanic eruption) have been active in the past and are preserved in the rock record
D) physical processes observed today (such as erosion and volcanic eruption) have been occurring throughout Earth history at constant rates