What is the main reason why objects in Low Earth Orbit (LEO) typically decay and de-orbit faster than objects in higher orbits?

Answer

Atmospheric friction

Objects residing in Low Earth Orbit are subjected to atmospheric drag, even if slight, which causes them to slow down, lose altitude, and eventually burn up upon re-entry into the atmosphere.

What is the main reason why objects in Low Earth Orbit (LEO) typically decay and de-orbit faster than objects in higher orbits?
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