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3 
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A group of all of one type of species in a certain area 
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|  
4 
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A group of all the populations in the area 
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|  
6 
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the role of something in an ecosystem 
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|  
7 
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A situation where symbiosis is not needed 
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|  
9 
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A type of symbiosis in which one species benefits and the other is harmed 
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|  
11 
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A relationship between two species in which at least one benefits 
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|  
 
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|  
1 
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The species that is harmed in parasitism 
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|  
2 
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A type of symbiosis in which one species benefits and nothing happens to the other one 
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|  
5 
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A situation in which both species would die without symbiosis 
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|  
8 
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A type of symbiosis in which one species mimics another so it gains its benefits 
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|  
9 
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The species that benefits from parasitism 
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|  
10 
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A type of symbiosis in which both of the species benefit 
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|  
 
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