Question

What do you understand by desirable and undesirable changes ? is flood a desirable or an undesirable change ? Give reasons.

Answer 1

• Desirable changes: the changes which benefit us in some way or the other are called desirable changes
• Examples: Drying clothes in the sun
• Burning of cooking gas
• ripening of fruits.
• Undesirable changes: The changes which bring us some form of harm or cause destruction are called undesirable changes.
• Examples: occurrence of earthquakes.
• Flood is an undesirable change.