100+ Clean water class PowerPoint (PPT) Presentations, Clean water class PPTs

Clean water class - PowerPoint PPT Presentation

ANALYSIS of WATER POLLUTION according to BIOINDICATORS

ANALYSIS of WATER POLLUTION according to BIOINDICATORS. Water pollution. Bioindicators are organisms, which indicate pollution of the ecosystem. Water pollution. There are 5 classes of pollution: class 1: clean water class 2: partly polluted water class 3: moderately polluted water

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Clean water class - PowerPoint PPT Presentation

ANALYSIS of WATER POLLUTION according to BIOINDICATORS