Agenda 21 was adopted at first International Earth Summit held in 1992 at Rio de Janerio Brazil. The two principles are as follows: To combat environmental damage, poverty, disease through global cooperation on common interests, mutual needs and shared responsibilities. Every local government should draw its own local Agenda 21.
Red Soil Red soil develops on crystalline igneous rocks in areas of low rainfall. Red soil is found in parts of Odisha and Chhattisgarh, southern parts of the middle of Ganga plain and along the piedmont zone of the Western ghats. Red soil develops a reddish colour due to diffusion of iron in crystalline and…
The main cause of land degradation is large scale overgrazing. Measures to check include: Afforestation and proper management of grazing. Planting of shelter belts of plants. Stabilization of sand dunes by growing thorny bushes. Control on overgrazing.
Three measures of controlling land degradation are: Afforestation and proper management of grazing can help to some extent. Planting of shelter belts, control on over-grazing, stabilisation of sand dune by growing thorny bushes. Proper management of wastelands, control of mixing activities, proper discharge and disposal of industrial effluents and wastes after treatment can reduce land…
Features of arid soils : Arid soils range from red to brown in colour. They are generally sandy in texture and saline in nature. Due to dry climate, high temperature, evaporation is faster and the soil lacks humus and moisture. The lower horizons of the soil are occupied by Kankar because of the increasing calcium…
We live on land, we perform our economic activities on land and we use it in different ways. It supports natural vegetation, wildlife, human life, economic activities, transport and communication systems. It is an asset of a finite magnitude.
We can contribute to minimize the pollution by: Planting more plants and trees. Using non-conventional sources of energy such as solar and wind energy. Using public transport instead of personal car/motor bike etc. Saving water and electricity.
Resources are vital for human survival and it was believed that resources are free gift of nature. The indiscriminate use of resources led to the following problems: To satisfy the greed of few individuals, depletion of resources has continued. Due to the accumulation of resources in few hands, the society gets divided into two segments,…
Renewable: Replenished by nature and may be overused e. g., crops and plants. Non-renewable: which get exhausted after years of use. e.g, crude oil.