7 characteristics of living things Crossword
             
             
             
             
             
             
             
             
             
             
             
 
 
Down: 1) must occur in an organisms environment in order to avoid extinction2) the sun is the main source of this on earth4) to get bigger and bigger by adding cells6) smallest living unit that can carry out living processes Across: 3) Organisms must have this in order to make molecules called protein5) must occur for species to survive7) response to immediate and long term changes in the environment
 

 

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