Which unstable element is used to determine the age of volcanic rock? argon
carbon-12
potassium
carbon-14

Which step is not included in the step approach to calculating the greatest common divisor?

Land conservation is a worldwide priority. there are several methods to prevent the loss of land due to a variety of reasons. which method is not a way to conserve land? a) sea walls b) rainwater harvesting c) limits on clear cuts of forests d) cut and burn methods of clearing land

The importance of the mind as a part of the body is an example of: