Halons and cfc’s both destroy ozone layer in the stratosphere.
- Chemicals with carbon, chlorine, and fluorine atoms are known as chlorofluorocarbons (CFCs), and they are neither poisonous nor combustible.
- They are employed as solvents, refrigerants, blowing agents for foams and packaging materials, and in the production of aerosol sprays.
- Halons, hydrochlorofluorocarbons, and chlorofluorocarbons all damage the ozone layer, which protects the planet from damaging ultraviolet (UV-B) rays from the sun.
- Additionally warming the earth's lower atmosphere, CFCs and HCFCs alter the climate on a global scale.
- Life on earth is made possible by the stratospheric ozone layer, which protects the planet from the sun's harmful ultraviolet (UV-B) rays.
- Ozone in the upper atmosphere is destroyed by man-made substances such halons, hydrofluorocarbons, and chlorofluorocarbons (CFCs)
learn more about ozone here: brainly.com/question/520639
#SPJ4
If one wishes to clone a gene using typical restriction endonucleases, how does the restriction endonuclease identify the appropriate cut sites in the genome using the palindromic sequence.
Restriction endonucleases are a family of enzymes usually found in bacteria that cuts DNA at a specific sequence called recognition site. There are three type of restriction endonuclease Type I, Type II, and Type III.
Each endonuclease recognizes a particular sequence called palindromic sequence which is a sequence that reads the same sequence in both the strands either reading from the 3 prime end or 5 prime end.
The endonuclease cuts the palindromic sequence in such a way that it produces sticky ends.
To learn more about restriction endonucleases here
brainly.com/question/14755040
#SPJ4
Answer:
Only the recessive allele is expressed in heterozygous individuals?
False
Explanation:
Recessive allele is always homozygous and never heterozygous as it is always dominant
The appropriate response is that the zones are just situated in provincial territories. Low Emissions Zones is a movement contamination accuse plan of the point of lessening the tailpipe discharges of diesel-fueled business vehicles in London. Just vehicles that don't fit in with higher discharge models are charged, the others may enter the controlled zone for nothing out of pocket.
