IB Biology Extended Essay Exemplar: HOW DO DIFFERENT CONCENTRATION OF MICROPLASTIC (20 mg/L, 40 mg/L, 60 mg/L, 80 mg/L, 100 mg/L) IN WATER AFFECT GROWTH RATE OF Hydrilla ver cillata BY MEASURING THE CHANGES IN LENGTH AND TOTAL CHLOROPHYLL CONTENT AFTER 7 DAYS | RevisionDojo