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How Ecosystems Change Crossword Puzzle Answer

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How Ecosystems Change

Read the clue closely, and use the word bank to complete the following crossword.

                                    G          
                          R         R       L  
                          O         A       O  
                          C         S       G  
          E A R T H Q U A K E       S   S   G  
          C                         E   O   I  
          O L D F I E L D S U C C E S S I O N  
          L                             L   G  
        V O L C A N I C E R U P T I O N        
          G                                    
      P R I M A R Y S U C C E S S I O N   F    
          C                               A    
        M A T U R E F O R E S T           R   H
          L                               M   U
          S E C O N D A R Y S U C C E S S I O N
  P       U                               N   D
  L   F   C L I M A X C O M M U N I T Y   G   R
  A   L   C                                   E
  N   O   E                 G   F             D
  T H O U S A N D S         L   I             S
  S   D   S                 A   R              
L       P I O N E E R S P E C I E S            
I         O           P     I     H            
C O M M U N I T Y     E     E     R            
H   O                 C     R     U            
E   S                 I           B            
N   S                 E           S            
                      S                        
Across Down
4 natural disaster caused by tectonic plates and leads to secondary succession
6 type of secondary succession that involves previously cultivated land
7 causes primary succession by producing new rock
8 change and replacement of organisms in an area where life did not exist before
10 example of a climate community
12 change and replacement of organisms in an area where life existed before
15 group of organisms of different species that develops by the end of ecological succession
18 number of years it takes primary succession to occur
20 organisms that first colonize an uninhabited area
23 part of the ecosystem that changes in ecological succession
1 species that appear after bacteria, lichen, and moss during ecological succession
2 present at the start of primary succession
3 human activity that involves clearing trees and leads to secondary succession
4 change and replacement of organisms in an area over time
5 present at the start of secondary succession
9 human activity that involves growing crops and leads to secondary succession
11 number of years it takes for secondary succession to occur
13 organisms that sprout or release seeds when small fires are present
14 natural disaster caused by excessive rainfall and leads to secondary succession
16 causes primary succession by melting
17 causes secondary succession and eliminates brush that could lead to large forest fires
19 organism made up of a fungus and an algae that is a pioneer species
21 part of the community that changes in ecological succession
22 species that appear after grasses during ecological succession
24 another pioneer species like lichen
 
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