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Ecology



                        B                                    
                        I                 A                  
                        O         W       S                  
                        D         A   C   S                  
                        I         T   O   I                  
                        V         E   N   M                  
                    H   E         R   S   I                  
                    A   R         C   U   L                  
        F           B   S         Y   M   A                  
        O           I   I         C   E   T                  
        O       B   T   T         L   R   I                  
        D   P R I M A R Y S U C C E S S I O N     T          
        C       O   T                     N       R          
        H       G                                 A          
    C   A     S E C O N D A R Y S U C C E S S I O N          
C   O   I       O                                 S          
A M M O N I F I C A T I O N                       P          
R   M           H                                 I          
N   U         D E N I T R I F I C A T I O N       R          
I   N           M                                 A          
V   I         N I T R O G E N F I X A T I O N     T          
O   T           C                                 I          
R   Y           A B I O T I C F A C T O R S     F O O D W E B
E               L                     M           N          
      B I O T I C F A C T O R S       N                      
                Y                     I                      
  N I T R I F I C A T I O N           V                      
                L               H     O                      
        P I O N E E R S P E C I E S   R                      
        R         C       C     R     E                      
        O         O       O     B                            
        D         S       L     I                            
        U         Y       O     V                            
        C         S       G     O                            
        E         T       Y     R                            
        R         E             E                            
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Across Down
8 Succession that occurs where life has not existed before
11 Succession that occurs in areas where there has been previous growth
13 The production of ammonia by bacteria during the decay of oganic matter
14 The conversion of nitrate to nitrogen gas
15 The process of combining nitrogen with hydrogen to form ammonia
16 Non-living factors
18 A diagram that shows the feeding relationships between organisms in an ecosystem
19 Living factors
20 The production of nitrate from ammonia
22 First organisms to live in a new habitat
1 Variety of organisms, their genetic differences, and the communities and ecosystems in which they occur
2 The absorption and incorportion of nitrogen into organic compounds by plants
3 circular pathWay of water on Earth from the atmosphere, to the surface, below ground and back
4 Organisms that consume plants or other organisms to obtain energy
5 The place where a particular population of a species lives
6 The path of energy through the trophic levels of an ecosystem
7 Circulation of substances through living organisms from or to the environment
9 Water vapors are released by plants
10 The many different species that live together in a habitat
12 An animal that eats other animals
17 An organism that eats both plants and animals
21 An organism that eats plants only
22 Organisms that capture energy to produce their food
23 Consists of a community and all the physical aspects of its habitat
24 Study of the interactions of living organisms and their environment
 
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