Biology - Biology: The Essentials - Hoernagels, 30, Evidence Carbon-14 is a radioactive isotope with a half-life of 5,730 years. A squirrel bone found in
southwestern Colorado contains of the carbon-14 of a living squirrel. Approximately how old is
4
the squirrel bone?

the principles and empirical processes of discovery and demonstration considered characteristic of or necessary for scientific investigation, generally involving the observation of phenomena, the formulation of a hypothesis concerning the phenomena, experimentation to test the hypothesis, and development of a conclusion that confirms, rejects, or modifies the hypothesis.

colors do exist. the color of the sky is actually violet; humans percieve the color of the sky as blue.

. the sierra madre fault zone of southern california

. the san andreas fault california