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Science IX | Natural Resources: Our Environment | Part 3
Natural Resources: Our Environment | Part 3 Soil Soil is the portion of the earth’s surface consisting of disintegrated rock and decaying organic material. It provides the support for many plants and animals. Thickness of soil on the earth’s surface ranges from a few millimeters to 3-4 meters. Terrestrial plants depend for their nutrients, water…
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Science IX | Natural Resources: Our Environment | Part 2
Natural Resources: Our Environment | Part 2 Rain As the air rises, it expands and cools. This cooling causes the water vapour in the air to condense in the form of tiny droplets. Such process of condensation of water is facilitated when dust and other suspended particles act as the ‘nucleus’ for these droplets to…