Scientist discover the preserved remains of a woolly mammoth and want to determine its age well examining a sample from the bones the scientist discover the specie man is composed of 6.25% carbon 14 carbon 14 has half life of 5730 years how old is the woolly mammoth?

What drives an advertising campaign?

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

Which material is commonly used as a culture medium for living cells