What is this?
Ride bikes
What is this?
Clean air
What is this?
Endangered animals
What is this?
Recycle
What is this?
Litter
What is this?
Pick up litter
What is this?
Plant trees
What is this?
green areas
What is this?
Take public transport
What is this?
Garbage can
What is this?
Start a campaign
What is this?
pollution
What is this?
Noise
What is this?
Write a letter
What is this?
Hold a town hall meeting
What is this?
Traffic jam