Theory:

Natural changes:
The changes that take place in nature on their own without human interruption are known as natural changes.
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Natural changes
    Example:
  • Seasonal changes
  • Volcanic eruption
  • Rotation of earth around the sun
  • Sunset and sunrise
  • Flower blossoming
  • Ripening of fruits
  • Rain
  • Wind
  • Formation of rocks, ageing and so on.
Man-made changes:
The changes that do not occur in nature on their own and are done only with human effort are known as man-made changes.
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Man-made changes
    Example:
  • Cooking raw vegetables
  • Cutting trees for making wood furniture
  • Construction of road and buildings
  • Electronic gadgets
  • Machines
  • Vehicles
  • Jewelleries
  • Dresses
  • Packed food items and so on.