Cyclones are extremely disastrous hazards that originate in seawater. These are usually followed by rains and wind of very high speed.In fact, these are atmospheric disasters that occur mainly in coastal areas like coastal regions of Bangla Desh and India.
Humans have a complex relationship with animals. They use them for a variety of purposes. There are working animals, companion animals, animals used for scientific research, and animals used for food and byproducts.
Great diversities are found in terms of sexual reproduction among animals.
Recently, it has been found that Photo Voltaic Cells cannot be popularly used for power generation on large scales. However, our scientists have discovered that the alignment of Carbon Nano Tube with the polymer composites substrate would give very high efficiency in Photo Voltaic Conversion.
It is the unthinkable huge magnitude of all the ill effects of pollution and its ever-increasing nature, which has forced the whole of humanity to do a great deal of serous thinking about its attitude towards the relationships with the natural environment.
Human beings needed to live together to have a family and to rear and develop children. They lived together for social security and social strength. Thus, human settlements were formed.
Neighbourhood is a geographically localized community within an area, may it be a rural area, a town or a city, or sub-urban.
Man is surrounded by various life forms, forces and conditions- both physical and biological. Sunlight, land, air and water form physical conditions whereas all the plants, animals, and microorganisms form biological conditions.
There are four basic factors that cause population change in a country – Natality or the birth rate, Mortality or…
Plants and trees shed their leaves from time to time. This happens due to a number of reasons. From some plants and tree leaves continue falling throughout the year. At the same time new leaves continue developing to compensate their number.
Green plants and trees that synthesize their own food are called as Autotrophs.Others who depend on them are called as Heterotrophs.
It is now a general opinion that if we see something moving, it is alive.
The acid rain affects living and non- living components of environment. In July 1982, Stockholm- the venue of U N –conference on acid rain, suffered heavy acid showers for about a week. In India too, acid rains have been reported since last twenty years in areas where thermal power plants are located and also around Delhi, the capital of India.
