Free points you’re welcome

What is the primary purpose of a game reserve?

In north america, most winter storms form when cold, dry air from interacts with warm, moist air from

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