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Which of the following characteristics is not a function of humus in soil?

1. Provides nutrients
2. Raises pH
3. Retains moisture
4. Humus does all of the above in soil

Correct answer: Raises pH

Solution

Humus contributes nutrients and improves moisture retention, but it does not generally raise soil pH. In fact, humus often has a buffering effect and can be slightly acidic rather than alkaline.

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