Most extinctions that have occurred throughout Earth's long history have been a result of natural factors.
Natural Extinction Factors
Natural factors can cause extinctions and have thus been documented and studied over the course of Earth's history.
- Many organisms became extinct throughout geologic history because of their inability to adapt and survive changes in the environment due to:
Extinction Isn't All Bad!?
- When species become extinct, the opportunity exists for another species to fill that ecological niche (environment).
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Topic Tips
- Most extinctions that have occured on Earth were a result of natural factors.
- Extinction isn't all bad. The extinction of many species allows other species to be more successful under the new conditions.