Which of the following describe the process of deflation

Need now! 45 points laboratory: weather map interpretation i need someone to answer the other two questions. i will give to the best answer!

What is found within a ranger tower overlooking a drained lake

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