are physical or chemical changes.
Formation of curd from milk
Dissolving salt in water
Glowing of an electric lamp
3. Photosynthes
6. Bursting of
9. Rusting of
il.
owing changes with suitable examples.
changes
b. Reversible and irr
a chemical change. Give two examples of ea
a physical change and a chemical change.
candle is an example of both physical as we
evaporation are physical changes. Why?
loride is a physical change. Why?
nd sulphur are heated together, a chemi
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Precipitation deficiency
Droughts occur mainly in areas where normal levels of rainfall are, in themselves, low. If these factors do not support precipitation volumes sufficiently to reach the surface over a sufficient time, the result is a drought.
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