Choose the false statement about minerals. a. they form naturally. b. they make up rocks. c. they are solids or liquids. d. they are made of one or more elements.

Examine the population chart of niger. based on this chart, niger is in the stage of thompson’s demographic transition. a. balance b. growth c. leveling d. replacement

Which of the following countries has declared itself nuclear free

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