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CBSE Class 12-science Answered

what is key
Asked by madhu | 15 Feb, 2016, 01:02: PM
answered-by-expert Expert Answer
A species whose presence and role within an ecosystem has a disproportionate effect on other organisms within the system is termd as keystone species. Example- Bees. By pollinating plants, bees contribute to their survival. The plants are shelter for insects, which are then eaten by birds. 
Answered by Sivanand Patnaik | 15 Feb, 2016, 01:24: PM
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