by admin | May 29, 2015 | sem3
Chemical composition of the atmosphere The early Greeks considered “air” to be one of four elementary substances; along with earth, fire, and water, air was viewed as a fundamental component of the universe. By the early 1800s, however, scientists such as...
by admin | May 29, 2015 | sem3
India as a mega-diversity nation India, the largest democratic republic of the world, has the seventh largest area (328.73 million ha) and second largest human population (more than 1 billion). With about 2.5% of the world’s geographical and 1.8% of the forest area,...
by admin | May 29, 2015 | sem3
ex-situ conservation Ex-situ conservation is the preservation of components of biological diversity outside their natural habitats. This involves conservation of genetic resources, as well as wild and cultivated or species, and draws on a diverse body of techniques...
by admin | May 29, 2015 | sem3
In-situ conservation In-situ conservation is on site conservation or the conservation of genetic resources in natural populations of plant or animal species, such as forest genetic resources in natural populations of tree species. It is the process of protecting an...
by admin | May 29, 2015 | sem3
value of biodiversity Direct values The direct value include food resources like grains, vegetables, fruits which are obtained from plant resources and meat, fish, egg, milk and milk products from animal resources. These also include other values like medicine, fuel,...
by admin | May 29, 2015 | sem3
desert ecosystem The different components of a desert ecosystem are: (A) Abiotic Component: The abiotic component includes the nutrients present in the soil and the aerial environment. The characteristic feature of the abiotic component is lack of organic matter in...
