natural

[Audio] Shows about natural resources. NATURAL. RESOURCES.

CONSERVATION. WELCOME TO OUR. Natural resources are materials from the Earth that are used to support life and meet people's needs. Any natural substance that humans use can be considered a natural resource. Oil, coal, natural gas, metals, stone and sand are natural resources. Other natural resources are air, sunlight, soil and water..

NON RENEWABLE RESOURCES. RENEWABLE RESOURCES. NATURAL RESOURCES.

wind energy. water. gas. RENEWABLE RESOURCES. Resources which can be renewed or replenished quickly. These are unlimited sources.A renewable resource is a resource of which there is an endless supply because it can be replenished. examples:solar,wind energy and water.

petrol. gas. coal. NON-RENEWABLE RESOURCES. The resources which cannot be immediately replaced once they are depleted are called non-renewable resources. examples:petroleum and oil..

02. LAND,SOIL,WATER,NATURAL VEGETATION AND WILDLIFE.

LAND. Land is among the most important natural resources. It covers only about 30% of the total areaof the Earth's surface and all parts of this small percentage are not habitable..

COMMON PROPERTY RESOURCES. Land can also divided on the basis of private land and community land. Private land is owned by individuals whereas,community land is owned by the community for common uses in collection of fodder,fruits,nuts and medical herbs. This community lands are also called as common property resources.

CHANGE IN LAND USE OVERTIME. People and their demands are growing but the availability of land is limited. People started encroaching the common lands to build their commercial areas,housing complexes in the urban areas and to expand the agricultural land in the rural areas. Land degradation,land slides,soil erosion desertification at the major threats to the environment because expansion of the agricultural and constructional activities..

MITIGATION TECHNIQUES. 01. Hazard mapping locate areas prone to landslides.Hence, such areas can be avoided for building settlements..

SOIL. Soil is a mixture.It is a portion of a eart surface consisting of various components like small particles of rock of different sizes,bits of decayed living organisms which are called humus,various forms of microscope life,air and water..

FACTORS OF SOIL FORMATION. SOIL. RELIEF. TIME. CLIMATE.

QUALITY OF SOIL. Quality of soil is determined by the content of humus and Microscopic organisms found in it. The mineral nutrients that are found in a particular soil depend on the rocks it was formed from..

SOIL POLLUTION. Removal of useful components from the soil and addition of harmful substances,which adversely affect the fertility of the soil and kill microorganisms living in it are called soil pollution. Fertilizers and pesticides and destroy the soil structure..

02.

DO YOU KNOW?. Water is called the fluid of life. 75% of the Earth's surface is covered by water,97% of the which forms of oceans and only 3% forms of fresh water.Water exists soil,liquid and gaseous forms.It occurs in atmosphere, on land surface,as well as underground..

WATER POLLUTION. The addition of undesirable substances to water and removal of desirable sentences from water is called water pollution. The main causes of water pollution or as follows: Addition of harmful substances to water. Removal of desirable substances from water. Change in water temperature.

02. NATURAL VEGETATION AND WILDLIFE.

02. BIOSPHERE. Natural vegetation and wildlife exist only in the narrow zone of contact between the lithosphere, hydrosphere and atmosphere that we call biosphere. In the biosphere living beings are interrelated and interdependent on each other for survival.This life supporting system is called as ecosystem.

Changes of climate and human interferences can cause the loss of natural habitats for the plants and animals..

FOREST FIRE.

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