Environmental Science
All the statements are correct regarding ecological succession except

It is a random process
The food chain relationships becomes more complex
Species diversity increases as succession proceeds
The role of decomposers becomes more and more important

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Environmental Science
The aurora is produced by:

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

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