Instructions
Look up(search for) the following words and learn to spell:
1. Incinerator.
2. Compositing.
3. Emission.
4. Biodegradable refuse.
5. Non-biodegradable refuse.

1) which of the following is the best example of a physical change? a) sugar dissolving in tea b) firefly glowing 2) in the combustion of ethane, what is/are the reactants? c2h6 + o2 ==> co2 + h2o a) c2h6 and o2 b) co2 and c2h6