Across
- 1. the birds and animals that live in a place
- 4. what makes the air and water dirty
- 6. a person who is riding a bicycle
- 7. people who are travelling on foot
- 8. water transport; people also live in them
- 10. lots of traffic that isn't moving
- 11. what you walk on to go up and down stairs
Down
- 2. things to put our litter in
- 3. a place in a city where with grass and trees
- 4. buses,trains,etc. that everyone can use
- 5. what cyclists use to cycle round the city
- 9. lots of loud, unpleasant sounds