1. Give reasons for the following 2013 Wastea vopo Changing of water to water vapour is considered as physical change. 2. Mixing of mud with water is considered a reversible change. 3. Burning of candle is a chemical change. 4. Steaming of idli batter to idli is an irreversible change.

In the united states there are strict fishing seasons and limits, but not all countries enforce similar laws. in bangladesh there are few if any fishing restrictions. what might be the reason for less restrictions in smaller countries like bangladesh? a) the united states is the only country worried about overfishing. b) the united states wants to limit the supply of fish to increase the price. c) bangladesh and smaller countries have an unlimited supply of fish in their coastal waters. d) small countries, such as bangladesh, are practicing subsistence fishing, taking only the fish needed to survive.