Exercise on paragraphs 7,8 — task. English Language State Board, Class 9.

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1. How can the flow of water be advantageous?

Conversion of rocks into soil.
Movement of silt and nutrients.

2. When can waterflow become disastrous?

If allowed to proceed unchecked, it can wash away the soil with the nutrients.
If allowed to proceed unchecked, it can convert the rocks into soil.

3. What is the greatest problem if soil erosion occurs?

Large quantities of water is wasted.
Large quantities of precious soil can be washed away.

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