Ecological crises in oceans and coasts, Science

Ecological Crises in Oceans and Coasts:

Coastal and marine areas all over the world including those in India are under stress, because two thirds of  the world's population lives near the coasts, and 60%  of the marine food is harvested from the zone near the coasts. Most of  the sewage, garbage and industrial - wastes find their way  into  the sea. Ever since  the lndustrial Revolution, technology has been developed to increase production of various kinds of goods, without regard to where the smoke from the chimneys would go, or where various kinds of washed chemicals-many of them poisonous would flow to. So  industry produces massive amounts of "waste" which is allowed to reach the sea. It was also  thought in earlier times that the sea is so big, you can throw anything into it without affecting  it. Now, however, even in  India, it has come to pass that huge quantities of dead fish were found floating  in  the Arabian sea on the western coast. due to poisonous outflows  from a fertiliser factory. Such happenings are not rare, and industrial wastes must be  treated to remove harmful chemicals, before allowing  them to go into the sea. The same should be done to sewage, which carries harmful chemicals and bacteria into sea water. 

The rivers, which join the seas, bring sand from the hills and plains, and thus lot of silt gathers near the coasts. Rivers also bring to the sea water, runoff from the fields, which, today. means a certain amount of fertilisers  and pesticides. 

A new factor has recently come to light and that is chemicals  from nucle'ar power plants and nuclear industry.

This waste has radioactive chemicals which can demolish and destroy living organisms  in ocean waters. Huge amounts of  such waste is generated every year. particularly,  in the advanced countries of  the world, who have found ways of dumping this waste in the coastal areas of  the poor countries.  

Posted Date: 9/28/2012 5:26:45 AM | Location : United States







Related Discussions:- Ecological crises in oceans and coasts, Assignment Help, Ask Question on Ecological crises in oceans and coasts, Get Answer, Expert's Help, Ecological crises in oceans and coasts Discussions

Write discussion on Ecological crises in oceans and coasts
Your posts are moderated
Related Questions
What is the job of chromatin in an animal cell?

Some Physical Features of the Atmosphere: i) The atmosphere is a mixture of gases. It is made up of 78.08%  nitrogen; 21% oxygen by volume. There is only 0.03%  of carbon dioxi

Explain the Nuclei or Ganglia Deep within the cerebral hemispheres are groups of nerve cells called nuclei or ganglia which act as relay stations, where impulses are passed fro

VERIFICATION OF STOCK REGISTER : A stock register is an important component of any official establishment in which records related to purchase, use and maintenance of all the item

define carbohydrates.give a brief account on classification of carbohydrates.

What divides the outer core from the mantle above it? There is a gradual transition caused by a vary in temperature and decreasing pressure..

I am doing a science project and I need to have a section in my project about the analogy of microtubules

Define Ishihara's Charts - Colour Blindness Colour blindness is often assessed using Ishihara's charts. If ever you visited an eye specialist, you too must have seen this chart

I need an idea for a science project with apples

What is the minimum depth required for a feature to be considered a canyon? In fact, it is a bit like allowing for when a few grains of sand become a heap of sand: there is no