WORKSHEET Let's answer: 9.1. Fill in the blanks : (1) The uppermost layer of the earth's crust is called the (2) Water flows over terraces built on hill slopes. (3) Roots hold the particles in place. (4) Agents like the wind cause of soil. (5) The ... .. is a dwelling place for animals like snakes. (6) Deposition of fertile top layer of soil is called (7) Planting of new trees over a large vacant area is called
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Dr hawking is a very humble man. (add a question tag)
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