Water Pollution Crossword

2. Wetlands are important because they ___________ and purify surface water, making it safe to drink.
3. Wetlands are important because they act like a __________, holding water that could cause a flood.
6. The process by which once living things break are broken down.
8. A poison used to kill pests which can dissolve into water, making it poisonous
9. If pollution kills off once species of animal the entire _________ can break down.
10. Pollutants that dissolve into the water making it potentially poisonous are called ______________.
11. What you should do to plastic and other materials which do not break down.

1. Use ______________ safe chemicals and cleaning materials to avoid polluting the water supply.
3. Human waste which often ends up polluting rivers.
4. Wetlands provide a very important _________ and water source for many animals.
5. A Chemical we put on our plants to help them grow which gets washed into rivers by the rain.
7. Pollutants like plastic and oil which do not dissolve are called _________________