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The next two are considered to be density independent (factors are not affected by size of population, they would occur if there was one or a million organisms) 6 . Natural disasters (hurricanes, floods, earthquakes, fire, tornadoes, etc.)
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The next two are considered to be density independent (factors are not affected by size of population, they would occur if there was one or a million organisms) 6. Natural disasters (hurricanes, floods, earthquakes, fire, tornadoes, etc.) 7. Human influence (buildings, farming, bulldozing forests to make room, etc.)