Can You Breathe 30000 Feet?

Can you breathe at 35000 feet?

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Is there oxygen at 35000 feet?

At what height do you lose oxygen?

Is living at high altitude healthy?

Can planes fly at 50000 feet?

Can you get altitude sickness at 5000 feet?

Can you breathe at 40000 feet?

At what height does oxygen start to thin?

Do airplanes circulate fresh air?

At what altitude is it hard to breathe?

How high can you fly without oxygen?

Do Pilots breathe pure oxygen?

Is 5000 feet hard to breathe?

Why can’t planes fly over the Pacific?

Why do jets fly at 35000 feet?

Can a human survive at 37000 feet?

Can you breathe at 20000 feet?

Can a human survive at 35000 feet?

What is the lowest flight level?

Do planes fly over Everest?

Do you age faster at higher altitudes?