Role of altitude of coal bed

All of the following are major european ethnic groups except a celtic b. germanic c slavie iberian d select the best answer from the choices provided.

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 do you think was the long term impact of england victory