Short answer type questions ( in 20-30 words): 1. What is land use? List the factors which control the utilisation of land. 2. Name the two main climatic factors responsible for soil formation. 3. Write two reasons for land degradation. 4. How is land an important resource for us? 5. What are soil horizons? Explain the various soil horizons present in a soil profile. 6. Discuss the agricultural practices that can be adopted for soil conversation. 7. What are the factors responsible for the shortage of fresh water? 8. Suggest few methods of water conservation.
Answers
Answer:
1.Land is utilized by human beings for various purposes, for e.g. agriculture, settlement, mining, setting up of industries, etc. suchutilization of land is known asLand Use. Factors affecting the land use pattern of an area are: (a) Physical Factors: Climate, Topography, Water availability, Soil, Minerals, etc.
2.Temperature andrainfall are the two main climatic factors responsible for soil formation. Consequently soils display a wide variety of physical and chemical characteristics. In India, soil formation is mainly related to the parent rock material, surface relief, climate and natural vegetation.
3.Two reasons for land degradation are deforestation and overuse of chemical fertilisers. Why is landconsidered an important resource? Solution : Land is considered an important resource because it is used for different purposes such as agriculture, forestry, mining, building houses, roads and setting up of industries.
4.Land resource is importantbecause humans not only live but also perform all economic activities on land. Besides,land also supports wild life, natural vegetation, transport and communication activities. Ninety five percent of our basic needs and requirements like food, clothing and shelter are obtained from land.
5.Most soils have three major horizons(A, B, C) and some have an organichorizon (O). The horizons are: O -(humus or organic) Mostly organic matter such as decomposing leaves. The Ohorizon is thin in some soils, thick in others, and notpresent at all in others
6.Techniques for improved soil conservation include crop rotation, cover crops, conservation tillage and planted windbreaks, affect both erosion and fertility. ... Farmers have practiced soil conservation for millennia.
7.Due to overpopulation, industrialization and urbanization, the consumption of water has increased manifold. ... This has reduced the availability of fresh waterfor human consumption.
8.1. Check your toilet for leaks.
Put a few drops of food coloring in your toilet tank. If, without flushing, the coloring begins to appear in the bowl., you have a leak that may be wasting more than 100 gallons of water a day.
2.Put a plastic bottle in your toilet tank
Put an inch or two of sand or pebbles in the bottom of a one liter bottle to weigh it down. Fill the rest of the bottle with water and put it in your toilet tank, safely away from the operating mechanism. In an average home, the bottle may save five gallons or more of water every day without harming the efficiency of the toilet. If your tank is big enough, you may even be able to put in two bottles.
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