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Which of the following could possibly increase genetic variation indirectly?

1. toxins
2. predator-prey relationships
3. competition
4. new habitat
5. disasters
6. increased food supply

User NickyvV
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2 Answers

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its the forth one i guess 
User Cladoo
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4. new habitat or 2. predator-prey relationships but i think it is more likely 4

User Meinersbur
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