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In autogenic succession

1. Community itself modifies its own environment, thus causing its own replacement by new commuity
2. Early dominance of heterotrophs
3. Replacement of existing communites due to external conditions
4. Early and continued dominance of autotrophic organisms

Correct answer: Community itself modifies its own environment, thus causing its own replacement by new commuity

Solution

Autogenic succession is driven by the biotic community itself: organisms change soil, light, moisture, or nutrients, and those changes lead to replacement by another community. That matches the option describing self-modification causing self-replacement.

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