1)Aeroplanes may be affecting ozone, monsoon:- According to a study by researchers, Aeroplanes may be ejecting significant amounts of black carbon (BC) and this may be depleting the ozone layer. Researchers now have evidence of these particles existing up to 18 km into the stratosphere and there are about 10,000 of them in every cubic centimetre.
What is Black Carbon?
Black carbon consists of pure carbon in several linked forms. It is formed through the incomplete combustion of fossil fuels, biofuel, and biomass, and is emitted in both anthropogenic and naturally occurring soot.
How Black Carbon Effects ?:-
Black Carbon could only derive from emissions from aviation fuel and they pose a problem because these black carbon particles can linger long enough to provide a fertile ground for other chemical reactions that can deplete the ozone layer.
Other Harms of Black Carbon:- Black carbon (BC) is a pollutant known to aggravate breathing disorders.
Because BC particles strongly absorb solar and terrestrial radiation and heats up the atmosphere it can upset the monsoon system. If deposited on snow, it could accelerate the heating of snow and quicken the melting of glaciers.
2)India to host steering committee meeting of TAPI gas pipeline:- Turkmenistan-Afghanistan-Pakistan-India (TAPI) gas pipeline. With this, India has reaffirmed its strong commitment to TAPI — first proposed in 1995.
About the TAPI Pipeline Project :- The Turkmenistan-Afghanistan-Pakistan-India Natural Gas Pipeline (TAPI) Project is a natural gas pipeline being developed by the Asian Development Bank.
From the Galkynysh field in Turkmensitan, the pipeline will run to Herat and Kandahar province of Afghanistan, before entering Pakistan.
In Pakistan, it will reach Multan via Quetta before ending at Fazilka (Punjab) in India.
3)Concept behind Sex Chromosomes :=
Sex chromosome, either of a pair of chromosomes that determine whether an individual is male or female.
The sex chromosomes of human beings and other mammals are designated by scientists as X and Y.
In humans the sex chromosomes comprise one pair of the total of 23 pairs of chromosomes.
The other 22 pairs of chromosomes are called autosomes.
Individuals having two X chromosomes (XX) are female; individuals having one X chromosome and one Y chromosome (XY) are male.
4)What are designer Babies?
A baby whose genetic make-up has been selected in order to eradicate a particular defect, or to ensure that a particular gene is present.
Technique Used: It can be done by editing our genes by bacterial DNA scissors called CRISPR (clustered regularly interspaced short palindromic repeats).
Cas-9 is the enzyme that is used in CRISPR technique.
What is Black Carbon?
Black carbon consists of pure carbon in several linked forms. It is formed through the incomplete combustion of fossil fuels, biofuel, and biomass, and is emitted in both anthropogenic and naturally occurring soot.
How Black Carbon Effects ?:-
Black Carbon could only derive from emissions from aviation fuel and they pose a problem because these black carbon particles can linger long enough to provide a fertile ground for other chemical reactions that can deplete the ozone layer.
Other Harms of Black Carbon:- Black carbon (BC) is a pollutant known to aggravate breathing disorders.
Because BC particles strongly absorb solar and terrestrial radiation and heats up the atmosphere it can upset the monsoon system. If deposited on snow, it could accelerate the heating of snow and quicken the melting of glaciers.
2)India to host steering committee meeting of TAPI gas pipeline:- Turkmenistan-Afghanistan-Pakistan-India (TAPI) gas pipeline. With this, India has reaffirmed its strong commitment to TAPI — first proposed in 1995.
About the TAPI Pipeline Project :- The Turkmenistan-Afghanistan-Pakistan-India Natural Gas Pipeline (TAPI) Project is a natural gas pipeline being developed by the Asian Development Bank.
From the Galkynysh field in Turkmensitan, the pipeline will run to Herat and Kandahar province of Afghanistan, before entering Pakistan.
In Pakistan, it will reach Multan via Quetta before ending at Fazilka (Punjab) in India.
3)Concept behind Sex Chromosomes :=
Sex chromosome, either of a pair of chromosomes that determine whether an individual is male or female.
The sex chromosomes of human beings and other mammals are designated by scientists as X and Y.
In humans the sex chromosomes comprise one pair of the total of 23 pairs of chromosomes.
The other 22 pairs of chromosomes are called autosomes.
Individuals having two X chromosomes (XX) are female; individuals having one X chromosome and one Y chromosome (XY) are male.
4)What are designer Babies?
A baby whose genetic make-up has been selected in order to eradicate a particular defect, or to ensure that a particular gene is present.
Technique Used: It can be done by editing our genes by bacterial DNA scissors called CRISPR (clustered regularly interspaced short palindromic repeats).
Cas-9 is the enzyme that is used in CRISPR technique.
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