ozone layer

[nesrine96]

slm çv !! ma3lich t3awnoni f projet ta3 english
projet
what are the dangres that threateu the earth !!
what are the reasons!
what can you suggest (as solutions)
what are the conservation measures that have already been taken by the algerian goverment !!!
ana rani 7aba ndiir 3la ozone layer w 7aja w 7abiit nziid mais mal9itch than can U help me plz

[samara lara]

what u need tell me i will help u ..

[nesrine96]

i didn't start yet
But I need some advice and guidance if you want

[samara lara]

definition:
the ozone layer is a deep layer in the stratosphere (http://www.weatherquestions.com/What_is_the_stratosphere.htm), encircling the Earth, that has large amounts of ozone in it. The layer shields the entire Earth from much of the harmful ultraviolet radiation that comes from the sun

.

[samara lara]

http://www.factmonster.com/ipka/A0800624.html
aya by ana nrou7 nchouf lmatch
;)

[nesrine96]

good one
look to my definition
the ozone layer is a portion of the atmosphere of the planet All which contains ozone gas intensely Largely it is centered in the lower portion of the stratosphere layer of earth's atmosphere All which is blue in color

[nesrine96]

hhhh Ook mrc aprés nchlh
kamel rana ray7iin by

[Heaven Cherry]

if you're looking for dangers that threaten our planet earth here's some :

Climate change , Global warming , pollution ,
which can cause a number of serious damages and affect in the balance of nature
like for example : extinction of some species of animals and plants , melting of the polar ice caps , a huge increase of the world's surface temperature , the ozone layer will be no longer able to prevent harm rays that can cause skin cancer , breathing problems , heart disease...
u can also use my project of last year i think it is helpful
http://www.youtube.com/watch?v=6IaA69T6P9o

[nesrine96]

thank U so muth heaven cherry

[nesrine96]

thank U soo much heaven cherry ..