The rate at which an igneous rock cools is likely to determine
a. the rock's color.
b. the rock's density.
c. the size of the rock's crystals.
d. the rock's chemical composition.

Ateam of researchers calculates that a glacier will melt completely away in the next 100 years. which land structure will most likely be left behind after the glacier melts?

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 a way that advancements in technology improve humans' ability to measure air quality and protect human health?