INTERNET...

The internet is a source of knowledge.It is ofbvery recent origin.However the influence it has on society is immeasurable.The scope is very wide.It is known the world over.It is easily accessible to everyone.

       Knowledge has got a new dimension with the introduction of the internet.An internet user has access to a lot of knowledge and information.A book for example is read serially one sentence after the other.Letters are written horizontally or vertically.

       If we want to read a book and listen to music at the same time,we have to use two seperate source fo that.But the internet has brought the two together for us.You must have seen people working at the computer listening to music.

      When producing a book,the weight and size play an important role.That is why dictionaries and enxyclopedias come in volumes.we will not be able to lift one if they are produced as a singke work.The internet has no 'weight'unlike a book which is heavy and so with the 

network,there is no 'bulk'.We can get what we want to at a click.

       The language that is most used on the internet is English.The internet was first started as a research project if the Department of Defense of the USA.

   

        The internet provides an immense source of knowledge, through search sites such as Google,Wikipedia,Yahoo etc..

However there are certain disadvantages in the internet.No one is responsible for the information or the quality of information.There is no source for this information.There is no authority or authorship responible.

Functions of Water in the Body..

1. All body functions are the result of chemical reactions.Most chemical reactions in the body can occur only in a water medium because substance disolve in water.

2. The speed at which some of these chemical reactions occur is affected by how acidic body fluids are.water helps maintain acidity at the proper levels.

3. Water is a product of the chemical reactions that supply energy to drive your body processes.

4. Water in body fluids provides a medium to trnasport gases,nutrients,and waste products throughout the body.

5. Water helps regulate body temperature.water loss through perspiration helps cool the body.

References: Mawbima News Paper

   

What Happens When You Sleep?

It may seem as though your body shuts off completely while you're asleep.This is not totally off the track,because your breathing and heart rate do slow down temperature drop slightly.But at the same time,your brain continues to recognize outside information,so it remains about as active,in a different way, as it is when you're awake.
         It exhibits this activity in the form of brain waves,or electrical changes that take place waves,scientists have been able to recognize the different stages of sleep,and what goes on in the brain during each phase.

Why We  Need Exercise?

 

We have probably heard all about how good execise is for us.It can help develop our muscles and lose weight.We may not realize is that regular exercise helps us cope better with the stress and anxiety we probably face every day,and that it greatly increases our energy level.It can even help us avoid some serious diseases later on in life.

       Some people like to exercise more than others.If we're the wide reciever on our school football team, we will have an easier time figuring out how to be physically active than if we hate the thought of lacing up a pair of sneakers.
        Walking for half an hour before supper,or biking to school instead of taking the bus, is often enough to give your body the exercise it needs.

Book Review of  ' Samukka' Novel

Title: Samukka

Author: Jayani C.Pinnawale

Translated to into English: Edmond                            Jayasuriya

Now samukka novel is translated into English.The author has attempted to tread on a new path to bring out a valued perspective to the attention of youth.The message is for youth to build character, while transcending from conventional thought, however deep and manifested, so as to build one's life, with an enlightened mind and thereby, acquire value for one's self and society.

           It is her long experience in serving in many capacities in the Sri Lanka Administrative service and exposure that promoted her to attempt to stress this point for serious consideration to the youth of today,for they play a positive role in society.

            Samukka is a novel woven around a youth named 'Wickrama'who deplores conventional way of life.He is the only child of Tittawelas, a wealthy aristrocratic family living,in suburbs of Colombo.From his childhood Wickrama creates a secluded life of his own, He spends most of the time in his room reading and when in school, in the library.

RAINFORESTS

Tropical rainforests are located around the equator.The temperature around the equator is high.Hence the rate of water evaporation is high.As a result there is frequent rain in rainforests.

       They are found in South and Central America,Africa,in the islands around Australia and Asia.The rainforests are important to human existence and the surroundings.

         Rainforests are a rich source of medicinal plants, food and useful forests products.They maintain about 50% of the plant, animal,bird,reptile and insect species of the world.These forests help to maintain a regular rainfall.They also stand as buffer against floods,droughts and eroision.These forests produce a significant amount of the world's oxygen.