Environmental Science
The slow rate of decomposition of fallen logs in nature is due to their

low cellulose content
low moisture content
poor nitrogen content
anaerobic environment around them

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Environmental Science
The aurora is produced by:

The combination of molecular and atomic oxygen to form ozone
Burning oxygen caused by the intense sunlight at high altitude
Fast-moving charged particles colliding with air molecules
Reflections of sunlight by polar ice fields
Scattering of sunlight in the upper atmosphere

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