Question

What are the various agencies of pollution?​

Answer 1

Answer

Generally, there are three pollution agents namely as WATER,AIR and FOREST.

...

3 Major Agents of Pollution: Water, Air and Forests

• Water: Access to potable water is a basic need for people living in cities and villages. ...
• Air:The other major problem that affects the health of people rich or poor is the quality of the air we breathe. Indian cities have become some of the most polluted in the world with New Delhi heading the List. The World Health Organisation (WHO) ranks India’s capita as the fourth most polluted city in the world. The major contribution to air pollution to vehicular pollution followed closely by industrial pollution. To Control Pollution CNG (Compressed Natural Gas) has been followed instead to petrol as one of the measures.
• According to National Policy of 1998 India should have one third of its land under forests. In fact barely 12 percent of the land is under forests. Areas with dense forest cover include natural forests that is, forests with mixed vegetation as well as monoculture plantation. Independent surveys suggest that while the overall figure for dense forest has increased marginally, but the area under natural forests has declined. This increase is due to more plantation.

Answer 2

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There are various types of pollution chiefly arising as a result of anthropogenic causes. Also contributing to pollution is globalisation, where humanity’s constant need for natural resources has slowly started to change the face of the earth.

Though the quality of living has drastically improved, other new issues have risen that gradually impact human health and the environment. In this article, we shall explore the meaning, causes and types of pollution. Also, we shall analyse the repercussions of pollution on human health and the environment.

What is pollution?

“Pollution is the introduction of substances (or energy) that cause adverse changes in the environment and living entities .”

Pollution need not always be caused by chemical substances such as particulates (like smoke and dust). Forms of energy such as sound, heat or light can also cause pollution. These substances that cause pollution are called pollutants.

Pollution, even in minuscule amounts, impacts the ecological balance. Pollutants can make their way up the food chain and eventually find their way inside the human body. Read on to explore the types of pollution and their implications.

Types of pollution :

As stated before, there are different types of pollution, which are either caused by natural events (like forest fires) or by man-made activities (like cars, factories, nuclear wastes, etc.) These are further classified into the following types of pollution:

• Air Pollution
• Air PollutionWater Pollution
• Air PollutionWater PollutionSoil Pollution
• Air PollutionWater PollutionSoil PollutionNoise Pollution

Besides these 4 types of pollution, other types exist such as light pollution, thermal pollution and radioactive pollution. The latter is much rarer than other types, but it is the deadliest.

Air pollution

Air pollution refers to the release of harmful contaminants (chemicals, toxic gases, particulates, biological molecules, etc.) into the earth’s atmosphere. These contaminants are quite detrimental and in some cases, pose serious health issues. Some causes that contribute to air pollution are:

• Burning fossil fuels
• Mining operations
• Exhaust gases from industries and factories

Water Pollution

Water pollution is said to occur when toxic pollutants and particulate matter are introduced into water bodies such as lakes, rivers and seas. These contaminants are generally introduced by human activities like improper sewage treatment and oil spills. However, even natural processes such as eutrophication can cause water pollution.

Soil Pollution

Soil pollution, also called soil contamination, refers to the degradation of land due to the presence of chemicals or other man-made substances in the soil. The xenobiotic substances alter the natural composition of soil and affect it negatively. These can drastically impact life directly or indirectly. For instance, any toxic chemicals present in the soil will get absorbed by the plants. Since plants are producers in an environment, it gets passed up through the food chain. Compared to the other types of pollution, the effects of soil pollution are a little more obscured, but their implications are very noticeable

Noicee pollution

Noise pollution refers to the excessive amount of noise in the surrounding that disrupts the natural balance. Usually, it is man-made, though certain natural calamities like volcanoes can contribute to noise pollution.

In general, any sound which is over 85 decibels is considered to be detrimental. Also, the duration an individual is exposed plays an impact on their health. For perspective, a normal conversation is around 60 decibels, and a jet taking off is around 15o decibels. Consequently, noise pollution is more obvious than the other types of pollution.