Which form the boundary between europe and europe

Which property of soil depends on the size of particles? color odor temperature texture

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

For one week be an inventor and write down ideas for products or services that you think should be produced