III. Answer the following in one sentence.
1. Give two reasons why we consider land to be an important resource.
2. How does the parent rock affect soil character?
3. Give one reason why land is kept fallow.
4. Name the three factors that determine the demand for freshwater resources.
5. How much of the world's water can be used by human beings for consumption
Answers
Answer:
1.Land is considered an important resource because it is being used by human beings for several purposes such as agriculture, forestry, mining, building houses and roads, and setting up industries. Also, it provides habitation to a variety of flora and fauna. Hence, it is among the most important natural resources.
2. Through the process of weathering rocks are broken down into smaller and smaller particles. Thus the resulting soil can only be made based on the rock it is from and any other possible external factors.
3. don't know.
4. The history of predicting water use and related economic activity, population growth, and other variables of importance to water and economic planners shows that precise predictions are often incorrect. Difficulties arise because there are many unknown and poorly defined variables and because people are ingenious in their adaptations to change. Although predictions, projections, and scenario building rarely provide an adequate basis for planning by themselves, they may be useful in identifying and analyzing different options. Thus, many of the factors that are likely to affect future water use can be identified.
The 1996 UN report assessing the freshwater resources of the world concludes that "water use has been growing at more than twice the rate of the population increase during this century and already a number of regions are chronically water short. About one-third of the world's population lives in countries that are experiencing moderate to high water stress, resulting in part from increasing demands fueled by population growth and human activity. By 2025, as much as two-thirds of the world population would be under stress conditions" (UN, 1996). It is recognized that areas that are short on water may in effect import it from other areas when they import food or energy or manufactured products that require water inputs.
The peoples of the study area will almost assuredly live under conditions of significant water stress during the immediate future. Barring completely unforeseen events, the population of the region is likely to grow, possibly very rapidly. Moreover, the region will likely continue to
5. only 3.2%
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1)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. Name any two steps that government has taken to conserve plants and animals
2)Parent material affects soil fertility in many ways. First, the type of parent material determines which minerals (link to mineralogy) will predominate in the soil. ... When parent rock material is exposed to the atmosphere or when organic matter and/or minerals are deposited on the earth's surface, soil formation begins.
3)>One of the main reasons for the land fallow is that it is done to retain moisture and nutrients in the soil. The retained nutrient favours the good crop cultivation etc....
4)Name three factors that determine the distributions of freshwater resources.
Physical factors like climate and geographic relief.
Demographic factor like population . ...
Economic factors-The distribution of water is directly related to affordability of water .
5)0.3 percent
The earth has an abundance of water, but unfortunately, only a small percentage (about 0.3 percent), is even usable by humans. The other 99.7 percent is in the oceans, soils, icecaps, and floating in the atmosphere.