Breathing In and Breathing Out …
The bio-mechanical process of exchange of gases between an individual and his atmosphere is called as breathing.
bronchioles
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Environmental Problems and their global perspective
Our environment today is facing a number of problems. All those problems are causing dangers to take shape against the existence of the whole biosphere of this planet. But who is behind all those problems? The answer is – M A N.
Modern Agriculture and its impact on the Environment
More than half of the population of the world comprises farmers. These farmers know that maintenance and conservation of natural resources are very important to sustain their livelihoods. However, the demand of more and more food due to exploding population and higher expectations for comfort and wealth forces these farmers to exploit more and more of the natural resources through the application of modern technology.
Some Types of Technologies
There are many different types of technologies or technological models- such as Low-tech, Hi-tech, alternative, intermediate, appropriate, blended, hard, and soft technologies.
What is Ecosystem? What are its components?
The environment of our earth has a number of life zones that support birth and development of all types of organisms.
All the life zones of the earth are collectively called as Biosphere.
The biosphere vertically extends into the atmosphere up to about 10 km and downwards into the oceans up to a depth of about6.9 km.
Technological Evolution in 20th century
The application of scientific knowledge for practical purposes, especially in industry, is called as technology.
Farmers and their conditions in India
Sometimes it so happens that serious and abrupt changes in weather condition ruin the entire crop. Thus, the hard work of the whole season goes in vain. What about the debt which he has to pay? On the other hand, market prices of his agriculture production often remain too less to support the economy of the farmer. These are the conditions under which a number of farmers in different states of India have been reported committed suicides.
Soil Pollution: Causes and Consequences
Mixing of different types of substances in soil- which affects its natural qualities, and reduces its fertility- is called as soil pollution. Some environmentalists define soil pollution as – build-up of toxic chemical compounds, salts, pathogens or radioactive materials in soil that can affect plant and animal life adversely, is called as soil pollution.
Institutions of Globalization
Following institutions have shaped the current era of globalization- (a) International Monetary Fund (IMF), (b) World Bank, and (c) World…
Sida Plant :The Ethnoherbological and Medicinal Values
Sida is a shrubby plant which belongs to Malvaceae, a family of flowering plants. It grows in the wild in different types of habitats like overgrazed lands, roadsides; along the sides of walls of old buildings etc.
Diversity of leaves and Leaf-fall
Though there are two basic types of leaves of monocotyledonous and dicotyledonous plants, we observe immense diversities in their arrangements, sizes, and shapes.
Some leaves are very short, as short as they cannot be seen through naked eyes where as there are big broad leaves that can form many umbrellas for small children.
