Answers

2016-02-11T13:49:50+05:30
Iron is the metal which is highly concentrated in mesosphere
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2016-02-12T15:08:10+05:30
Some material from meteors lingers in the mesosphere, causing this layer to have a relatively high concentration of iron and other metal atoms. Very strange, high altitude clouds called "noctilucent clouds" or "polar mesospheric clouds" sometime form in the mesosphere near the poles.
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please chose my answer. thank you