The principle of uniformitarianism was based on the studies of which two scientists who realized that geologic changes are cyclical?

smith and cuvier

hutton and lyell

steno and tharp

seuss and wegener

Using data from seismic waves, geologists have learned that earth’s interior is made up of several

Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.

The arrangement of particles is most ordered in a sample of