What is this ???
Turn off the light
What is this ???
Start a compost pile
What is this ???
Recycle bottles and cans
What is this ???
Reuse paper
What is this ???
Shut off the water
What is this ???
Plant a garden
What is this ???
Take public transportation
What is this ???
Take reusable shopping bag
What is this ???
Use energy-saving light bulbs
What is this ???
Keep the air condition on low
What is this ???
Grow your own vegetable
What is this ???
Dry your clothes outside
