Tag: evs - i

Coal and oil are fossil fuels been derived from dead bodies of plants and animals, which existed in past. Hence, they are carbon compounds and emit carbon dioxide on combustion. Organic compounds are obviously compounds of carbon and will evolve carbon dioxide on combustion. Nuclear energy is non conventional, non renewable resource. Nuclear fission (now fusion also) of selected radioactive materials yields large amount of heat energy. For example one amu of Uranium - 235 yields energy equal to burning of 15 metric tonnes of coal. The energy released in nuclear fission and fusion is not due to combustion process and hence, does not evolves carbon dioxide.

Chipko Movement, started in 1970's, was a non violent movement, aimed at protection and conservation of trees and forests from being destroyed. The name of the Chipko moment originated from the word 'embrace' as the villagers used to hug the trees and protect them from wood cutters from cutting them. 

The fertility of soil can be considered in different ways, depending on land use. In intensively managed agricultural and horticultural systems, and even in forestry, soil fertility can be defined in terms of the value of products produced. In nature soil gains nutrients from rocks, which are natural reservoirs of nutrients. These nutrients are released through geological processes, like leaching and pedogenesis. Soil also gains nutrients through the agencies of water and dead and decaying excreta of organisms. The physical characteristics of soil also govern nutrient availability of soil. The nutrient availability is a measure of soil fertility.

The uppermost layer of soil is usually darker in colour due to the presence of huge amount of organic matter. Organic matter is composed of roots, dead leaves, insects, small organisms and animals which eventually get degraded to form humus and make the soil fertile. Humus is black in colour due to large quantity of carbon.

'World Environment Day' is celebrated every year on 5 June to raise global awareness to take positive environmental action to protect nature and the planet Earth. It is run by the 'United Nations Environment Programme' (UNEP). It was established by the 'United Nations General Assembly' in 1972 on the day, that 'United Nations Conference on the Human Environment' began. The first 'World Environment Day' was celebrated in 1973. Since then it is hosted every year by a different city with a different theme.

IUCN is the 'International Union for Conservation of Nature and Natural Resources', which is now called 'World Conservation Union' or WCU. It has its headquarters at Morges, Switzerland.

Jim Corbett national park is located in Uttarakhand and protect the endangered Bengal tiger.

Natural Resources exists naturally. It exists with or without human being intervention. It can't be created by humans but can be modified and utilized accordingly for humans comfort. Also, some of the natural resources are limited in nature hence it's demand is very high.

Primary fuel is the one which we get directly from nature.

Energy plantation is growing of firewood trees on the non forest and agricultural lands. Plants selected for energy plantation must be local, fast growing, hardy, requiring minimum nutrients, preferably with associated nitrogen fixing organisms, good cropping, good fuel value and having additional benefits like food, fruit, gum etc. It is an eco - friendly energy resource.