* Atmosphere: This is the most obvious place, the layer of gases surrounding Earth.

* Water: Air dissolves in water, which is why fish can breathe. This is also how marine life gets their oxygen.

* Soil: Air fills the spaces between soil particles, allowing roots to breathe.

* Rocks and Caves: While not as abundant, even rocks and caves have tiny spaces where air can exist.

* Inside Living Things: Our lungs, the leaves of plants, and even the spaces within insects all contain air.

It's impossible to find a place in nature completely devoid of air!