Suppose a rock sample was taken from a fossil; the model has 1000 atoms of carbon-14 and 1000 atoms of nitrogen. If carbon-14 has a half-life of 5700, how old is the fossil

Bottle deposit programs are one way to encourage higher recycling rates. explain how they work

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

At which point on the diagram do convection currents occur to drive plate movement?