Energy Flow in Ecosystems Crossword
                       
                       
                       
                       
                       
                       
                       
                       
                       
                       
                       
                       
                       
 
 
Down: 1) The total amount of living tissue within a trophic level2) Floating algae3) Network of feeding interactions Across: 4) Processes in which elements are passed from one another and among the biosphere5) A series of steps (trophic levels) in which organisms transfer energy by consuming and being consumed6) Chemical substances that an organism needs to sustain life7) A nutrient whose supply limits productivity in an ecosystem
 

 

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