How are volcanoes beneficial? Why is Alfred Wegener important? Why don't the present shapes of the continents fit perfectly into a supercontinent? How does stratigraphy help geologists? Why is natural erosion a beneficial process? Why were the graptolite fossils shale rather than carbonates?
Why are ammonites good index fossils? Why do scientists use the geologic time scale? Why are trace fossils important? Why are radioactive substances useful for measuring geologic time? Why did geologists develop the geologic time scale?
How are radiocarbon dates calibrated? Why is it important to study geology? What is the importance of index fossils? Why is potassium-argon dating useful for dating hominids? Why did geologists develop the geologic time scale? Why is the Murchison meteorite important?