brittneylouise2852
14.12.2019 •
Chemistry
The ph of an solution shows the concentration of () ions.
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Ответ:
The correct answer is option (d).
Explanation:
Humus is component of the soil formed from the decomposition of dead plants (leaves, flower, roots. stems etc)and animal matter by the action of micro-organism. This makes the soil nutrient rich and fertile for plants.
Hence, the correct answer is (d).