Ever since humans have inhabited the earth, they have made use of various forms of communication. Generally, this expression of thoughts and feelings has been in the form of oral speech. When there is a language barrier, communication is carried out through sign language in which motions stand for letters, words and ideas. Tourists, the deaf and the mute have had to take the help of this form of expression. Many of the symbols of whole words are very picturesque and exact and can be used interationally: spelling, however, cannot be used in this wayBody language conveys ideas or thoughts by certain actions, either intentionally or unintentionally. A wink can be a way of flirting or indicating that the party is only joking. A nod signifies approval, while shaking the head indicates a negative reaction. Examples of other forms of language can be found in Braille (a system of raised dots read with the fingerprints), signal flags, Morse code and smoke signals. Road maps and picture signs also guide, warn and instruct people. While the use words is most common form of language, other systems and techniques also express human throught and feelings.

A vast mangrove forest shared by Bangladesh and India that is home to possibly five hundred Bengal tigers is being rapidly destroyed by erosion, rising sea levels and storm surges, according to a study conducted by the ZSI. the Sundarbans took the brunt of cyclone Sidr in 2007, but new satellite studies show that 71% of the forested coastlline is retreating by as much as two hundred metres a yuear. If erosion conttinues at this pace. Already threatened tiger populations living in the forest will be put further at risk pettorelli, said "A continuing rale of retreat would see these parts of the mangrove disappear within fifty years. On the Indian side of the Sundarbans, the island which extends most into the Bay of Bengal has receded by an average of 150 meters a year, with a maximum of just over 200 meters; this would see the disappearance of the island in about twenty years."

The causes for increasing coastlme retreat,other than direct anthropogenic once, melude incrcased frequency of storm surges and other extreme natural events, rises in sea-leved and increased salinity which increases the vulnerability of mangroves. Research indicates a rapidly retreating coastline that cannot be accounted for by the regular dynmtes of the sundarbans, Degradation is happening fast, weakening this natural" shield for India and Bangladesh. As human development thrives, and global temperature continues to rise, natural protection from tidal wave and cyelones is being degraded at alarming rates. This will inevitably lead to species loss in this richly is done to stop it. The Sundarbans is acritical tiger habitat to loss the Sundarbans would be to move a step closer to the extinction of tigers. 

While adolescence is a time of tremendous growth and potential, it is a time tremendous risks during which social contexts exert powerful influences. Many adolescents face presure to use themselves at high risk for intentional and unintentional iunjurries, unintended ppregnancies, and sexually transmitted infections, including HIV. Many also experience a wide range of adjustment and mental health problems. Behavior patterns that are established during this period such as the use or avoidance of drugs and taking or abstaining from sexual risk can have long-lasting negative and positive effects on future health and well-being. As a result, adults have unique opportunities to influence adolescents.

Adolescents are different both from young children and adults. Specifically, adolescents are not fully capable of understanfing complex concepts, or, the relationship between behavior and consequences, or the degree of control they have or can have over health decision-marking, including that related to sexul behaviors. Laws, customs, and practices may also affect adolescents differently when they are unnamed. In addition even when services do exist, provider attitudes about adolescents often pose a significant border to the use of those services,

Adolescents depend on their families, their communities schools, health services and their workplaces to learn a wide range of skills that can help them to cope with the pressures they fsce and make a successful transition from childhood to adulthood. Patent, members of the community, service providers, and social institutions have the responsibility to both promote adolescent development and adjustment and to intervene effective when problems arise.

What is discipline? Is it absolute freedom to do what a person wants? Is freedom regardless of consequences? Does it mean corrective action after a problem occurs or wrong is | done ? Is it imposition ? Is it abuse? Does it take away freedom? The answer is none of the above. Discipline does not mean that a person takes a belt and beats up kids. That is madness. Discipline is loving firmness. It is direction. It is prevention before a problem arises. It is amassing and channeling energy for a great performance. Discipline is not something you do to yourself but you do it for those you care about. A discipline is an act of love. Sometimes, you have to be unkind to be kind. Not all medicines are sweet, not all surgeries are painless, but we have to take them.We need to learn from nature. We are all familiar with the big animal, the giraffe. A female giraffe gives birth to a baby giraffe standing. All of a sudden, the baby falls on the ground from the cushion of its mother's womb and sits on the ground. The first thing the mother grief does is get behind the baby and give it a hard kick. The baby gets up but sits down again. The mother keeps kicking till the baby gets up on its feet and starts moving. Why? Because she knows that the only chance of survival for the baby in the jungle is to be on its feet. Otherwise, it will be eaten up by wild cats. Children brought up in a loving yet disciplined environment end up respecting their parents more and | become law-abiding citizen. There reverse is just as true. Good parents are not afraid of momentary dislike by children to enforce the subject. Allowing a child to eat a box of chocolate could lead to sickness. At the same time, the discipline of eating one or two pieces a day can be an enjoyable experience for a longer time. Our instinct makes us do whatever we want regardless of the consequences. Freedom is not procured by the full in enjoyment of what is desired but by the controlling of desire.

The pundits' claim Dhaka is amongst the fastest growing city in the world. The population is multiplying in geometric proportions and if the same pundits' are not too smart, which I am afraid most of them are not always, the population and the city will soon collapse under their own weights. Do we see the pundits smirk now?

However, Dhaka is being inundated by a migrant population flocking in their millions to the beleaguered city, in search of jobs, opportunity of which there is not to much, to beg at the city light, steal, collect tolls, smash cars, you name it. Of course, the city fathers in solemn tones inform us that the law and other situation is better now than what it was even a short while ago.

Every once in a while our city fathers and mothers will also took the other way, when it comes to solving the accommodation problems of the teeming millions in the city. There are buildings springing up like mushrooms in this our beloved city, ostensibly to house the multitudes but more often than not to fetch fat rents for the chaps who matter. How it is possible for these building to come up overnight, taxing an already groaning basic facility network like the water, sewerage, and electricity to its breaking point, is a wonder. All these buildings of course cannot be built without permission from the 'relevant authorities' who again cannot give permission without proper assessment.

The grotesque structures rising all over the city, without let or hindrance, is a positive environmental hazard of course, because the facilities to go with all these structures are stretched to meet demands. They are already stretched to their limits and no way can go any further. The only problem here comes to be the city authorities who are so blinded with keeping the beggars away so they do not hinder the "games", that they do not seem to have the time to anything else. And if they cannot those ugly, big structures mushrooming all over the city, they are in big trouble. It is a dispiriting exercise, this entire effort of trying to make "them who matter" see anything they are not interested in seeing. Admittedly, air this seems perhaps funny in print, but in real life, it somehow seems to have lost its humor as the city groans under the continual construction of high rise buildings.

The Earth's climate changes. It is vastly different now from what it was 100 million years ago when dinosaurs dominated the planet and tropical plants thrived in high latitudes. It is different from what it was even 18,000 years ago, when ice-sheets covered much more of the northern hemisphere. In the future it will surely continue to evolve. In part the evolution will be driven by natural causes, such as slow changes in the Earth's orbit over many thousands of years. But further climatic change, unlike that of the past, will probably have another important source as well: human activities.