Answer:
The answer is c, thanks commenters!
Explanation:
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>
Three-fourths of the over 500,000 lakes in Europe are found in "c. Norway, Sweden, Finland, and Russia," since these areas have the most access to the Norwegian Sea.
