POLLUTION

1. Poisons, pesticides

1.1. poisons animals

1.1.1. poisons things which eat the animals

2. fertilisers

2.1. too much algae

2.2. red slime

2.2.1. suffocates wildlife

3. toxic waste

3.1. eaten/drunk by animals

3.2. eaten/drunk by people

3.3. poisons crops

4. Air

4.1. car smoke

4.2. factory smoke

4.3. Carbon Dioxide

4.4. Acid rain

4.5. methane

5. Sewage

5.1. red slime

5.2. germs make animals and people sick

6. Rubbish thrown in water

6.1. glass

6.2. plastic

6.2.1. gives off poison when it rots

6.2.2. harms wildlife by suffocating

7. Oil (car fuel)

7.1. kills sea birds

7.1.1. kills predators which feed on birds

7.2. kills sea animals directly

7.3. damages habitats