What is the definition of spatial dispersal? pls ! all i know is it is a type of spatial pattern.

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

Which of the following is evidence to the past existence of glaciers?

An enormous wave generated by an earthquake beneath the seafloor is known as a