Abiotic
PROCEDURES
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Step 1: Bring a tube and thermometer and DO machine to the pond （Site 3）
Step 2: Filled out the tube with certain amount of water in the pond, some with 5ml, some with10ml
Step 3: Return to the classroom，put tablets in the tube causing the reactions and waiting for results
6 INDEX that we focus on in the research / Procedures
Beaufort Scale：The strength/level of wind
Turbidity Procedure PH Paper Testing Procedure Phosphate Level Procedure
Nitrate Procedure in detail DO (dissolve oxygen) level AIR/WATER temperature
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