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1) ans=The topsoil is the uppermost layer and has these features: It's usually darker in color than the subsoil since it contains more organic matter from decaying plants and their roots. ... The subsoil is located between the topsoil and the parent rock (or material) below.
3) Mulching: The bare ground between plants is covered with a layer of organic matter like straw or peat to prevent loss of moisture from the soil. Fallowing: On hill sides, stones are used to build barriers across the slope, following contours.
5) Ocean water is not fit for human use due to the high salt content. It contains about 10,000-35,000 ppm of dissolved salts. Such a large amount of salt can cause dehydration if used for drinking purposes. ... Ocean water is an important resource as it is responsible for climate changes.
4) Water is considered a valuable resource because we need water to wash clothes, to drink (potable water), to clean floors, and many other purposes. Water have a great significance in present day. Every living organisms require water to survive.
2)) second in snap
