Chapter 7 Crossword
                         
                         
                         
                         
                         
                         
                         
                         
                         
                         
                         
                         
                         
                         
                         
                         
                         
                         
                         
                         
                         
                         
                         
                         
                         
 
 
Down: 1) development of new communities after an ecosystem has been disturbed2) establishment of communities in an area where living things never existed before5) mature and stable ecosystem7) plants or animals not native to an ecosystem that harm native organisms8) complete disappearance of a species9) one of the first species to colonize new or newly disturbed land10) something that restricts the growth and distribution of a population Across: 3) intetraction in which one organism catches and feeds on an organism of another species4) condition that keeps an organism from functioning properly6) place of great biodiversity whose species are threatened by human activity11) struggle among living things to use the same resources in an ecosystem12) variety of species that live in an ecosystem
 

 

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