Effect of air pollution, Biology

(i)    Effect on Human Health:

Air pollution causes many respiratory problems in human being.

(1)   Dust, soot and smog causes several respiratory troubles such as bronchitis, asthma, emphysema, lung cancer.

(2)   Fly ash and metal dusts causes headache, anemia, dizziness, insomnia etc.

(3)   SO2 causes drying of mouth, sore throat, eye irritation. It may damage the tissues by forming H2SO2.

(4)   NO and CO combine with hemoglobin of blood and reduces oxygen carrying capacity of blood.

(5)   Air borne organic material such as bacteria, a fungus etc. causes several diseases and allergic reactions or hay fever.

(6)    In atmosphere ozone is formed by photochemical reaction in stratosphere, which protects life on earth from high energetic U.V. radiation. In lower atmosphere, it produces chest pain, coughing and eye irritation.

(7)    Depletion of ozone layer exposes the earthy to increased U.V. radiations, which have caused increased rate of skin cancer and genetic mutation.

(8)    PAN (Peroxyacylnitrate) causes acute eye irritation.

(9)   Many hydrocarbons induce cancer. Tobacco smoke contains a hydrocarbon called benzopyrene, which causes lung cancer.

 

(ii) Effects on Animals:

The effects of air pollution on animals in and around industrial area are similar to those on human beings.

(1)        Ingestion of fluorine compounds deposited on fodder causes Fluor sis (Excessive calcification of bones and teeth). It is also causes of lameness, diarrhea and loss of weight.

(2)        Lead poisoning causes bronchitis and loss of appetite.

(3)        Many air borne microbes cause disease.

 

(iii) Effects on Plants:

Air pollution causes wide spread damage to plants.

(1)    Particulate such as dust, fog, soot get deposited on plant leaves, and retards photosynthesis.

(2)    Exposure of plant to high level of ozone causes chlorosis i.e. yellowing of green leaves.

(3)    Many plants are sensitive to PAN in smog which reduces photosynthesis and adversely effects cellular metabolism.

(4)    SO2 causes chlorosis, plasmolysis and membrane damage.

(5)    Ethylene (Hydrocarbon) causes premature leaf fall, fruit dropping, shedding of floral buds, curling of petals and discoloration of sepals.

(6)    Polluted air causes inhibited growth and death of lichens and it is an indicator of polluted area.

(7)    Terrestrial and aquatic vegetation is severely affected by acid rain.

 

(iv) Effects on Climate:

Earth climate depends on various factors one of them is composition of atmosphere and balance of gases. Therefore air pollution brings about harmful effects on climate.

(1)   Increase in CO2 will enhance the temperature of earth, (green house effects) resulting in melting of polar ice caps and glaciers etc.

(2)   Aerosols and nitrogen oxide depletes ozone layer in stratosphere which causes harmful U.V. radiation to reach on earth.

(3)   Changing regional climate may alters forests, crop fields and water supplies.

Posted Date: 7/11/2012 3:55:31 AM | Location : United States







Related Discussions:- Effect of air pollution, Assignment Help, Ask Question on Effect of air pollution, Get Answer, Expert's Help, Effect of air pollution Discussions

Write discussion on Effect of air pollution
Your posts are moderated
Related Questions
Diagnostic Evaluation   A  study of complete blood count (CBC) and blood chemistry mainly uric acid levels, is necessary for dignostic evaluation.  Radiologic  studies  are

Origin and Delivery - Transport in Phloem We have stated above that transport of photosynthates starts from leaves and ends up in one or the other sink tissue. Though this is

Explain briefly about Foams   Consider the following example. Take some liquid in a glass and agitate or shake it vigorously. What do you observe at the top of the liquid. Yes,

Q. Measurement of Colour in Foods? A number of instruments are used for colour measurements in food.  a) A simple method is to match the colour of a food with coloured chips

HOW TO WRITE A CONCLUSION ON A ASSIGNMENT OF EPITHELIAL TISSUES

Explain Observation or Inference required for osazone test? 1. Crystals of different shapes will be seen. Glucose and fructose give needle shaped crystals and galactose gives f

Ranikhet disease Ranikhet disease, also known in the west as Newcastle disease, is a contagious and highly fatal disease of fowls caused by a virus of the genus Rubulavirus in

Q. Learning objectives of metabolic diseases? • enumerate the etiological factors and symptoms of gout and few inborn errors of metabolism, • describe the metabolic changes

Lyme disease It is a metazoonoses caused by a spirochaete, Borrelia burgdorferi. The disease based on the specific symptoms, is also known as erythema migrans (ECM) or lyme  arthr

describe the importance,principles,techniques and uses of microscopy