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In soil, the water available for root absorption is

1. gravitational water
2. capillary water
3. hygroscopic water
4. combined water

Correct answer: capillary water

Solution

Capillary water is held in the tiny spaces between soil particles by capillary forces, so it remains available for plant roots. Gravitational water drains quickly, hygroscopic water is too tightly bound, and combined water is chemically unavailable.

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