Question

If you have an altitude of 55 mi. (miles), which layer of the atmosphere are you in?

Answer 1

`Answer:`
`You`
`would`
`be`
`in`
`the`
`D-region`

`The`
`reason`
`I`
`understand`
`this`
`is`
`because`
`the`
`D-region`
`stands`
`55`
`miles`
`in`
`altitude`,
`despite`
`it`
`will`
`likely`
`vanishes`
`at`
`night`.