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>
Answer:
The type of rock can tell you if the land was formed by layers of sediment, lava, etc. Fossils can show how old they are and therefore how old the land around it is
Explanation:
Russia
con 6.6 million de personas
The answer is: guess. Estimate. Like guessing a forecast. Or such.
