Pagod nako mag module!! ​

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

Where is the temperate deciduous forest located

Which material is an aquifer layer most likely made of? soil clay solid granite cracked rocks