Vocab Quiz Crossword
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
 
 
Down: 2) Section. or zone of the ocean where light does not reach3) Tiny pieces of dead organic material that is food for organisms at the base of an aquatic food web4) waste material that pollutes air, water or soil5) Amount of salt in a given body of water7) Any beneficial reduction in water loss8) the conversion of wasteland into land suitable for use of habitation or cultivation.9) The cycle of processes by which water circulates between the earth's oceans, atmosphere, and land10) Water purification is a process of removing undesirable chemicals, materials, and biological contaminants from raw water13) A general term for organisms that drift in water16) Zone under the earth, which is saturated by water17) Tiny pieces of dead organic material that is food for organisms at the base of an aquatic food web Across: 1) A general term for organisms that drift in water6) any of numerous groups of chlorophyll-containing, mainly aquatic eukaryotic organisms ranging from microscopic single-celled forms to multicellular forms11) A well drilled through impermeable strata to reach water capable of rising to the surface by internal hydrostatic press12) A very small stream14) Rainfall made sufficiently acidic by atmospheric pollution that it causes environmental harm, typically to forests and lakes.15) gradual increase of phosphorus and other chemicals in an aquatic system18) A common freshwater perch19) a measure of the condition of water20) The presence in or introduction into the environment of a substance or thing that has harmful or poisonous effects.
 

 

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