Quartz, feldspar, mica, amphibole, pyroxene, and olivine
Answer: widely varied; describing our world.
Explanation:
Geography is referred to as the study of the people and how they relate to their environments. It has to do with how the features of the Earth are being studied.
Also,not had to do with how populations are being distributed. It describes our world.
The fact that volcanic rock has often been found early in the rock record but less frequently in later rock layers suggest to scientists the following conclusion about early earth: <span>volcanic activity was more common in the past than it is today.
</span>Besides volcanic activity in general, also huge volcanic eruptions<span> were much </span>more common than today<span>.</span>