The smooth mountain rock surface makes a higher runoff rate than a vegetation surface. Differ form soil; mountain rocks have small fractures in the surface that absorb a little water but not that much.
The four scientific principles of sustainability are...
1. Reliance of solar energy
how much of the sun we reuse.
2. Biodiversity
When there is a large verity of species.
3. Nutrient Recycling
When a Population benefit from other populations.
4. Population control
When one type of population of species is to large.
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