Answer:
As new seafloor moves away from an ocean ridge, the seafloor cools and becomes less dense than the material beneath it.
Explanation:
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Answer:
D. intense volcanic activity.
Explanation:
- The Paleozoic era an era in the geologic time and started about 541 million years. It originated due to the diversity of life forms on the planet. and ended about 252 mn years ago along with the end of Permian era.
- The extinction was related to the changes in climate and exceptionally low sea levels. During which about 95% of the marine species were killed.
It was built to create a navigable water route from New York City to the Great Lakes.
Answer:
Toledo, Ohio and Toledo, Spain
Explanation:
Toledo, Ohio and Toledo, Spain were the first official pair of sister cities.
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