Question 1
Carbon-14 has a half-life of 5715 years. Currently living organisms decay at a rate of 15.3 disintegrations/ min per gram of carbon. If an archeological artifact has a carbon-14 decay rate of 12.0 disintegrations/ min per gram of carbon, the approximate age of the artifact is ________ years old.
Question 2
Human bones found on the west coast of the United States were thought to be remains of a prospector who lived in the 19
th century. The bones were subjected to carbon-14 dating. Carbon-14 has a half-life of 5715 years. Living organisms decay at a rate of 15.30 disintegrations per minute per gram of carbon. The bones had a carbon-14 decay rate of 4.660 disintegrations per minute per gram of carbon. To one significant figure the age of the bones is ________ years old, so the person ________ (did, did not) live in the 19
th century.
The human embryo
The human integration pyramid care model
The original Neandertal remains from the Neander Valley, Germany.
Four approaches to studying the evolution of human behavior.
A taxonomy of the human species.
Human Figure