The thermosphere is a layer of Earth's atmosphere. The thermosphere is directly above the mesosphere and below the exosphere. It extends from about 90 km (56 miles) to between 500 and 1,000 km (311 to 621 miles) above our planet.
h, it has the lowest density so it makes sense it is the gas.
Astronomers give stars names so that they're able to identify and keep track of them more easily.
Answer:because if 1 link is removed the other link wouldn't have anything to eat.sorry if this is incorrect:>
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