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Chemistry CBSE Live product
Class 7 (2025-26)
Changes around us: Physical and chemical changes
Revision II - Physical and chemical changes
7.
Steps involved in natural changs
Question:
4
m.
Complete the process of change with
suitable
steps:
1.
Heavy rocks
→
Deforestation
Fixing
Soil erosion
Weathering
→
Rocks breaks to fine pieces
→
Sediments
2.
Infertile soil
→
Wind blows
→
Holds sand
Holds soil
Strong wind blows away soil
Percolation
→
Condensation
Fragmentation
Evaporation
Soil erosion
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