Water pollution (B6)

Sources of water pollution:

• Fertilisers + pesticides
• Untreated sewage
• Oil spills
• Acid rain
• Detergents
• PCB - waterproofing boats/ships

Indicators of pollution:

Rat tailed maggots - long tail sticks above water to get oxygen

Reduce number of amphibians in water

Poisoned Whales:

Certain chemicals do not…