Heavy metals including mercury, lead, cadmium, copper, nickel, chromium, and zinc in the contaminated soil have adverse health effects in human metabolism.
Natural Disasters on Earth: Essay on Natural Disasters Words Article shared by: Here is your comprehensive essay on Natural Disasters! A natural disaster is unforeseen, severe and immediate.
Pollution, ozone depletion in the stratosphere and global warming come in this category. The destructive potential of any natural hazard is estimated basically by its spatial extent and severity.
Spatial extent upto which the effect of a disastrous event could be felt may easily be classified into small, medium and large scales. The phenomenon extending from a few kilometers to a few tens of kilometers are termed as small scale.
Growing industrialisation and unjustified exploitation of natural resources have brought our echo system to Pollution malaysia essay verge of non-reversibility and imbalance.
This has led to a threat from a set of natural hazards like pollution, global warming and ozone depletion on large or global scale. The management aspect of disaster may be classified as: The most important is the early warning systems. Unless sufficient advance notice is available, evacuation of the population likely Pollution malaysia essay be affected cannot be undertaken.
There are two aspects of early warning system. One is the availability of an effective technique to forecast the disaster with its extent and the other is effective communication of the same to the civil authority responsible for rescue operations.
In some phenomena, such as cyclones, flood, etc. Hence early warning, communication, and rescue operations are possible. But, in a few cases like flash floods, microburst, etc. On the contrary, in earthquakes no proven methods has yet been evolved to give any prior warning and so post-hazard mitigation is the only alternative.
Role of Communication For a developing country like India, the role of communication in disaster mitigation is extremely critical. These can neither be provided in a short span of time available for mitigation nor are there resources to do so.
We have to depend on existing links, many of which completely break down during the disaster.
The various types available for dissemination of disaster warning as well as arranging mitigation are: This assumes that the earth stations at the two ends are suitably located to remain unaffected.
Experience has shown that it remains completely unaffected under the severest cyclonic condition. However, the system is limited to one way communication only. The only addition required is the missing link between the nearest earth station to police headquarters. This would be a cost effective and reliable communication system for disaster warning and mitigation.
The theory of plate tectonics offers a comprehensive explanation for several geological phenomena — continental drift, mountain building and volcanism, and, of course, earthquake. According to this theory, when the molten mass that was the earth billions of years ago cooled down, the crust that was formed was not one homogenous piece but broken into about a dozen large plates and several smaller ones with their thickness ranging from 30 km down to the lithosphere at depth of about km or so.
The plates are in incessant motion, with speeds of about 1 cm to 5 cm a year. Where two places converge or collide, a deep trench forms and one plate is deflected downwards into the asthenosphere which lies below the crust and the lithosphere. When two thick continential plates collide, rocks on the land are relatively light and too buoyant to descend into the asthenosphere.
The result is a huge zone of crushing, with rocks and other materials being folded. And this is how the Himalayas have emerged or, in fact, are continuing to emerge. As the deformation of the plate margins goes on, energy builds up in rocks in the form of elastic strain which continues till it exceeds their elastic limits and the rocks give way.
The sudden release of stored elastic energy causes earthquakes. Earthquakes in India are caused by the release of elastic strain energy created and replenished by the stresses from the collision between the Indian plate and the Eurasian plate.
The most intense earthquakes occur on the boundaries of the Indian plate to the east, north and west. In the Indian plate, faults are created when this rubs against the Eurasian plate.Natural Pollutants Natural pollution has been present on earth since before man appeared and continues to be a factor when discussing air pollution, although it causes only a small percentage of the overall pollution problem.
It is the direct result of. The environment The known unknowns of plastic pollution. So far, it seems less bad than other kinds of pollution (about which less fuss is made).
BookMyEssay provides custom assignment writing services, essay writing, homework, Nursing, Management assignment help, case studies, dissertation writing, problem. To get a look at the oil sand mines we rented this Cessna which the pilot was allowed to bring down to 1, feet — from there, through the open window and with a long lens we were able to.
Essay on Pollution of Water Sources in Malaysia - INTRODUCTION In Malaysia, rivers have been used as a source of water and various development needs. There is no denying that water is a very significant natural resources.
The trouble with the average lifestyle today is that it becomes so easy for us to disassociate ourselves from the spiritual. We exercise, we go to counseling for our relationship problems, we read to beef up on current news, industry jargon and intellectual concepts – but we tend to neglect our spirituality.