# The Atmosphere

Know that Earth is surrounded by a layer of air called the atmosphere, that air has weight and exerts pressure, that the atmosphere protects us from harmful radiation and keeps the planet warm enough for life, and that weather happens in the lowest layer (troposphere)

Builds on: What Causes Wind (hard, https://ai.page/c/what-causes-wind/en.md)

Concept id: the-atmosphere. Subject: science. Licence: CC BY-SA 4.0.

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