ABSTRACT
This chapter provides a basic grounding in the principles of geology and explains how to apply them. Man-made evolution can be seen in the many breeds of dogs derived from the gray wolf in the past 30,000 years or so. The same applies to all the breeds of cattle, horse, and other domestic animals. These were bred for specific purposes: to herd sheep, to provide more milk, to run faster, or to pull heavier wagons. Domestication happens by picking and breeding only the tamest of wild animals. The first evolutionary biologists drew the tree of life as a mighty oak. Extinction marks the end of existence of an organism or group of organisms. It is a normal part of any ecosystem. The ongoing process of evolution and extinction is vastly different from mass extinction events.
