SCI T5 L3 Crossword
             
             
             
             
             
             
             
             
             
             
             
 
 
Down: 1) the surroundings or conditions in which a person, animal, or plant lives or operates Across: 1) a change that happens because of some kind of action2) the ability to produce the maximum output or achieve the best result with the minimum input of time, effort, money, or resources, essentially avoiding waste3) a substance that pollutes something, especially water or the atmosphere.4) not harmful to the environment5) the presence of substances in the environment that are harmful to humans or other organisms
 

 

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