Answer:
Kenya has higher life expectancy.
Answer:
4 billion years
Explanation:
Scientists have found the oldest known rocks on Earth. They are 4.28 billion years old, making them 250 million years more ancient than any previously discovered rocks. Earth formed about 4.6 billion years ago from a disk of gas and dust circling the sun.
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Answer:
The top part of the Caliente lava dome collapsed and produced large flows of lava, pyroclastic, and many explosions. It was a very hazardous and dangerous event.
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