What is this?
World
What is this?
Coal
What is this?
Litter
What is this?
Transport
What is this?
Pollution
What is this?
Recycling
What is this?
Turning the light off
What is this?
Forest
What is this?
Landfill
What is this?
River
What is this?
Paper
What is this?
People
What is this?
Metal
What is this?
Plastic
What is this?
Bin
What is this?
Wind turbine