Incineration is used in areas that do not have a lot of land space.
a. true
b. false

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

What is the thickest layer of earth called?

How are the arctic and antarctic circles alike?