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Apologia Exploring Creation with Physical Science Module 3
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Question:
Heterosphere
Author: Billy Browser!Answer:
The upper layer of earth’s atmosphere, which exists higher than roughly 80 kilometres (50 miles) above sea level.
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The upper layer of earth's atmosphere which exits higher than roughly 80 kilometres (50 miles) above sea level.
Other viable answers (Added by users whilst learning):
The upper layer of earth’s atmosphere which exists higher than roughly 80 kilometres (50 miles) above sea level.