Which of the following severely hampers food distribution in Equatorial Africa?

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

Plz which natural resources in southwest asia are important? choose all answers that are correct. oil plutonium water natural gas

What is a small water source like a stream or brook?