In year 1997, at the conference of parties III (CoP - 3) , Kyoto, Japan the Kyoto conference on climate change took place.
In that conference developed countries agreed to specific targets for cutting their emissions of green house gases.
A general framework has defined for this with specifics to be detailed in next few years.
This become known as the kyoto protocol.
In first three options CO 2 concentration increases but it decreases in option (d).
Global warming is increase of earth's average temperature.
Global warming is due to green house effect which is naturally occurring phenomenon that is responsible for heating of Earth's surface and atmosphere.
The main green house gas is carbon-dioxide (contribute 60%).
In India, the Air (Prevention and control of pollution) Act came into force in 1981 but was amended in 1987 to include noise as an air pollutant.
BOD is a measure of organic matter present in water.
It refers to amount of O2 consumed by microbes to decompose all the organic matter in 1 L of water at 20°C for 5 days.
The greater the BOD of waste water, more is its polluting potential.
Ozone present in upper part of the atmosphere ie. stratosphere is benefical for living beings.
As it functions as a shield against harmful UV-radiation.
High concentration of DDT disturbs calcium metabolism in birds which caused thinning of eggshell and their premature breaking.
Bad ozone is formed in the lower atmosphere (troposphere) that harms plants and animals.
Good ozone is found in the upper part of the atmosphere called the stratosphere and it acts as a shield absorbing ultraviolet radiation from the sun.
UV rays are highly injurious to living organisms since DNA and proteins of living organisms preferentially absorb UV rays and its high energy breaks the chemical bonds within these molecules.
The Bhopal gas tragedy occured on the night of December 2-3, 1984 at the Union carbide India Limited pesticide plant in Bhopal, M.P.
A leak of methyl isocyanate gas and other chemicals from the plant resulted in the exposure of hundreds of thousands of people.
Nitrous oxide is commonly known as laughing gas or sweet air.
It is a chemical compound with formula N 2 O.
It is also a major greenhouse gas and air pollutant along with CO 2 with tremendous global warming potential.
When compared to CO 2 , N 2 O has 310 times the ability to trap heat in the atmosphere.
N 2 O is produced naturally in the soil during the microbial processes of nitrification and denitrification.
Carbon dioxide from coal-fired power stations and car exhausts, is the main greenhouse gas.
DDT residues are rapidly passed through food chain causing biomagnification because DDT is lipo soluble.
