What are two characteristics of the temperature and two characteristics of the rainfall of Equatorial regions?​

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

How long does it take for saturn to orbit the sun?

Which feature of a map shows the relationship between a distance on a map and that distance on earth? key scale grid system compass rose