What cultures to shape the renaissance?

Geologists know that potassium-40 decays to argon-40, with a half-life of 1.3 billion years. if an analysis of a feldspar crystal in a sample of granite shows that 75 percent of the potassium-40 atoms have decayed to form argon-40, what is the age of the granite

How does lithosphere behave as a system ?

Which statements about settlement patterns are true? settlement patterns influence land use. settlement patterns are rarely politically or economically influenced. settlement patterns provide information about the people who live in an area. settlement patterns are influenced by the availability of resources.