source
There was a parallel between nature and environment on the life and creatures that were created on the earth many years ago. The role played in maintaining this balance was nature and environment. On the path of evolution of civilization, people have developed a little bit of their own environment. Human evolutionary environment is the evolution of its civilization crop. People have gathered with the talent, hard work and expertise of their new discovery, various methods of science and technology. Has acquired many tools for life-building. So he has made his own needs and interests according to his environment. Within this environment, its development, its destruction signals.

Reasons for environmental pollution:

Population growth is one of the reasons for environmental pollution. Due to the increase in population, natural resources have accumulated over water, soil, and air. Amit festivities of forest resources destroyed The plant world and the creatures of the world have also been affected. The balance of nature and environment has reached a crisis situation.
Has been associated with rising demand for energy production. With energy production, the emissions of human health and environment-contamination of various chemical products emerge. Malicious chemicals are the reason for the rapid expansion of many incurable disorders. The air-water-food is being severely polluted.

source

Air Pollution:

Air pollution is not free from Bangladesh. This problem is the highest in Bangladesh's capital Dhaka. There are mainly two reasons behind air pollution in Bangladesh - firstly: the smoke of the factories and secondly: the smoke of vehicles.
Fumes, emissions, sugar, paper, jute and textile mills, tanneries, garments, chemical and pharmaceutical industries have a lot of smoke. In Bangladesh many other health problems arise from headache, such as Hazaribagh tannery, emit hydrogen sulphide, ammonia etc., from poisoning caused by chemicals.
Increasing urbanization in the country, increasing vehicles increasingly contributing to air pollution. Excessive smoke emanates from two-stroke lanes like Baby Taxi, Tempo, Motor Cycle, Trolley etc.

source

Short term issues:

Due to air pollution, eye and nose pain is in short term. There are also serious diseases like bronchitis and pneumonia.
Long-term problems: Short-term breathing, lung cancer, heart problems, and even brain, nerve, liver and kidney failure can be broken due to air pollution.

Water Pollution:

Water is another name for life. 65% of human body water 71% of the Earth's water. But water pollution is constantly causing water pollution. Due to the contaminated drinking water, there are many prevalent complications.

source

source

Reasons for water pollution:

Water is being polluted in different cities and towns in Bangladesh. The causes of water pollution are mentioned below. The reasons for water pollution in the city are:

Water pollution is contaminated in the waste water of the factory.
The illegal pollution system on WASA water line and they pollute water in the water.
Many times the water line bursts and the dirt-garbage enters inside it. As a result, the water is contaminated.
People use pipe, pond and pond water in rural areas to eat and drink. In many ways this water is being polluted. The reasons given below are:
Arsenic is the main cause of water pollution in the water of tube well.
The use of pesticides in the field of crops and water in the rainwater is contaminated by the pond, water pumping water.
Water is contaminated in the same pond, cleaned by people and cattle animals.
Thus the water in the city and the village is polluted and the food and consumption become inefficient.

source

Health risks of water pollution:

Due to water pollution, various types of water borne diseases are prevalent. Such as diarrhea, typhoid, cholera, paratyphoidalgia, bacillary dysentery, poliomyelitis hepatitis, amoebic dysentery etc.

source

source

Noise pollution:

Sound pollution is an important problem of this era. The problem is increasing day by day. The noise level in the city is highest. There is a great deal of generosity in the production of an oasis in the heart of the motorbike, the sound of the factory, the sound of the fire, the radio, the sound of the television, the shouting of the people, the drowsiness of the festival, the melody of the music. The result of noise pollution is horrific.
There are many sources of sound pollution and many types. Without proper reason, the microphone or cassette player should stop playing. Needless to stop playing horns and playing hydraulic horn legally. In residential areas, so that factories can not grow, they have to be arranged.

source

source

The magnitude of noise pollution:

Sound pollution not only creates irritability but also stops the human body's arteries, increases adrenaline movement and forces the hutpind to work fast. Increasing the risk of heart attack and stroke if there is a continuous high sound. According to expert doctors, noise pollution can cause nervous impediments.
Experts believe that the continuous noise pollution spoils the hearing and causes permanent damage to the nerves. According to them, people living in the capital are under extra pressure on heart, kidney and brain. Children's temperament in noise pollution is irritable. They are losing hearing, losing their devotion. Its impact is on their education. Due to all types of noise pollution, sleep deprivation, hearing, emotional and physical health deteriorate. Any kind of noise pollution can harm pregnant mothers very well. Permanent mental impairment can occur in people with noise pollution.

Radioactive pollution:

The risk of radioactive pollution in nuclear warfare, nuclear weapons testing is the most vulnerable. In 1963 a US nuclear submarine was lost in the Atlantic Sea. A large amount of radioactive material spread from the natural environment. Nuclear energy production center can survive for 600 years with its healing powers.

source

Ways to prevent environmental pollution:

People are part of the environment and are directly benefitted. When the environment is damaged, people are damaged, human resources used to be destroyed, economic activity is hampered. So there is a need to create a disaster-free environment to build healthy body and mind. Various measures can be taken to maintain environment and to prevent pollution; She-

Establish and implement national and international environmental policy.
Reduced population growth and significant reductions in the minimum level.
Ensure arrangements for every industry-factory that has environmental pollution.
Formulate comprehensive forestry program.
Public awareness was created to prevent sound pollution and to develop sound harmony.
Ensure industrial refining systems.
Banning the use of wood as a fuel. Innovate alternative fuel.
Prevent black smoke from vehicles and prohibit the use of high sound horn through proper maintenance.
Ensuring political pledge for regional and international cooperation in conservation of environment.

Today, environmental pollution predicts dangerous threat to human civilization. The need to prevent environmental pollution at any cost to make a secure world for future generations is undeniable.