Week of January 6th  Test Tuesday, January 28th

1. carbon dioxide = a gas that is produced when people and animals breathe out or when certain fuels are burned

2. renewable fuels = fuels made from renewable resources

3. pollution = things that make land, water, and air dirty and not safe to use

4. compensate = to provide something good as a balance against something bad

5. experimental = made or done in order to see how well something works

6. emit = to send out (light, energy, gas, etc.) from a source