In addition to the rock particles, the soil contains:

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Air and water

Water and plants

Water, air, and plants

Minerals, organic matter, air, and water

answer is D.

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Detailed Solution

concept - Soil covers most of the land and is found around the world. Soil provides structural support to plants used in agriculture and is also their source of water and nutrients.
The basic components of soil include minerals, organic matter, water and air. Standard soil consists of about 45 per cent minerals, 5 per cent organic matter, 20-30 per cent water, and 20-30 per cent air.
Plants also require small amounts of iron, manganese, zinc, copper, boron, and molybdenum, known as trace elements because the plant requires only trace amounts.
Soil, therefore, contains minerals, organic matter, air and water.
Hence, the correct option is (4).

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