The theory of environmental determinism was first explained by alfred kroeber. false true

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

Find the area of the shaded region.

How many active volcanos are there in nicaragua