How long has the 'hole' in the ozone layer existed?

does this 'hole' expand and contract? and could it be a 'breathing hole' for the planet?How long has the 'hole' in the ozone layer existed?
The hole was first observed in the 70s when scientists started to investigate the upper atmosphere. CFCs have almost exclusively been the cause of the 'hole' in the ozone layer.





It's not a hole as such, but an area where the ozone concentration is much lower than the average.





The 'hole' does change shape according to the Sun's sunspot activity, the seasons, and latitude.





This should have all you need to know...


http://www.epa.gov/ozone/science/sc_fact鈥?/a>How long has the 'hole' in the ozone layer existed?
Since flourocarbons became widely used after WWII. I believe that it is fairly constant. The ';breathing'; thing sounds unlikely. It is in the upper atmosphere, and the analogy has no application.
Does it still exist?


It used to be the biggest issue around 10 years ago. But now its never even mentioned.





Strange that.





I wonder if it will be the same for CO2 in the next 10 years?
1870's - 80's. Scientists really started to talk about it in the 80's, although there were some talks on it beforehand. Chloro-Fluoro-Carbons or CFC's cause the problem, and it is a bit of a problem for us, to be honest. The ozone layer is there to protect us from harmful ultraviolet rays from the Sun. With a hole in it, a lot more of these rays get through and burn people alive! Literally. Ozone is a molecule formed of three Oxygen atoms and at our level, where we live, it is considered pollution and many people can get asthmatic reaction. So ozone gets formed down here at our level, where it shouldn't be, while up in the sky there's a massive great big hole! It's not a breathing hole, the ozone layer should be intact.
In 1985 the british antarctic survey team announced some disturbing information that the stratospheric ozone concentration was decreasing over the south pole. The ozone depletion has been happeing at least since the 1960s and possibly a bit earlier.





The discovery was made by accident, American atmospheric analytical methods were programmed to ignore small changes in ozone levels and the changes were considered erroneous. The British scientists looked at the data collected and luckily identified the problem.





Good news is that the ozone layer will repair its self over time now that cfcs are controlled.
a long time

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Are any of these optical drives dual layer?

PHILIPS DROM6216





_NEC DVD_RW ND-3550AAre any of these optical drives dual layer?
the NEC is





ND-3550A is a half-height optical drive with 16x write speed that supports DVD+/- formats and +R/-R dual layer disc. It delivers high performance for writing and reading while being compatible with 10 optical disc varieties





you can also get them at newegg.com starting at 20.00Are any of these optical drives dual layer?
nec yes philips no

What is the best way for me to dye my hair underneath my top layer?

i have been meaning to dye my hair underneath my top layer.but i have been thinking if i should go to a Professional,do it myself,or let a friend do it for me.


for example i would like to do something like this :





http://www.style-hair-magazine.com/images/how-to-dye-the-underneath-or-your-hair-12488.jpg





i also don't want to really ruin my hair..so what would be the safest but bestest way to do this?!What is the best way for me to dye my hair underneath my top layer?
GO to a hairdresser! I got mine done like that last year by a hairdresser, when the color started fading and I needed touch ups I did those myself because I could just follow the spots she colored it the 1st time. Just go to a professional.What is the best way for me to dye my hair underneath my top layer?
section your hair into two sections....the top, which you will tie up and out of the way and the bottom where you want the dark hair to start. Cover the root area of the top layer with conditioner or something that will keep the color OFF where you dont want it to be. then just color it the way you would if you were just doing your whole head, only just do where you want it done. I would have a friend help you since its the back of your head and you dont want to make a complete mess.
If your color now is blonde all over, then yeah u can tint the bottom yourself and it saves u money. Just go to Sally's Beauty Supply store and get whatever brown shade you like and divide your section starting from the top of one ear straight across to the other side of the top ear and clip the top section up and just tint the bottom section. And there u go. But if your hair isn't blonde and i would suggest to to a salon and let them do it for you. Cuz then you'll have to bleach the top section and color the bottom section too.
I can't believe I'm saying this, but you can have a friend do it for you very easily. Buy a semi permanent hair color in a gold or warm tone. Like a 4g or 5g. It won't ruin your hair because semi permanent has no peroxide in it. Then have your friend section your hair just below ear level and put the darker color on for about 20 min. Just be careful.
ive been dying my own hair since i was eleven.i even bleach it and ive never had a problem and my hair is really healthy. just pin up the top, and get some brown dye, clairol is really good. and have a friend put the brown dye on the bottom. and let it sit for the time in the directions.






PROFFESIONAL





I understand you don't feel liek paying for it but I promise you it lasts a lot longer and looks alot better.





Good Luck with it
professionally done sweety.
thats reeeeeally cute!


id go professionally. you never know how it could turn out when you do it yourself!
Best to get a friend to do it,I tried doing it myself and it's really hard



I HAVE BLACK ON THE BOTTOM AND SOME RED LAYERS ON THE TOP








GO TO A professionally

What layer of the rain forest does the xenops live in?

it is a birdWhat layer of the rain forest does the xenops live in?
Its called the understory layer but they often build nests close to the ground.What layer of the rain forest does the xenops live in?
It lives in the lowest levels, typically nesting below 20 ft and feeding on the ground

Top Layer Of Wedding Cake?

My one year marriage anniversary is December 2nd. Does anyone know the proper way to thaw out the top layer of my wedding cake so it will be good to eat on our big day? It has been frozen for almost a year now!Top Layer Of Wedding Cake?
We thawed ours in the refrigerator and it was pretty good.Ours was wrapped at least 4 times with plastic wrap and tin foil. The end product depends on how moist it was to begin with and well you store it. Good luckTop Layer Of Wedding Cake?
actually you cant! even though it is in the freezer it still has a expiring life span. so just leave it for memories, or you can remove it and have it preserved forever by shallacking it....then put it on a shelf
slowly, just leave it out for awhile, maybe in the sun. you don't want the ';icing'; to melt





My wife and I tried to do this. We left it at my grandmother's house in her freezer, cause ours was too small. We ended up just throwing it away and going to eat at a nice resteraunt.
Put it in the fridge 48 hours before so it can thaw slowly. Good luck on that one. Year old wedding cake is a nice idea, nice tradition, but.................its still year old cake.
let it sit out some where until it unthaws but not too much. then stick it back in the fridge untill its ready to eat

How do you layer clothes and look good?

pictures or ideas please. i love layered looks but idk how to do itHow do you layer clothes and look good?
For sure, don't buy shirts with fake layers, like the ones where its just a little piece of fabric sewed onto another one.





Get real layers like;


-Camis


-Tanks


-V-necks


-Vests


-Cropped hoodies


-T's


-NecklacesHow do you layer clothes and look good?
Okay, well layering can be difficult. Especially if you don't know how to do it.





The first thing is you always want to layer tight things UNDER looser things so it doesn't look as bulky.


If your wondering about colors, just experiment. Not all colors Match, for example you never want to layer brown and black. (you can if you want but it won't look very good :]) but you could try red and blue. It's all about experimenting.


Tanks under and over t shirts and long sleeves is cute. T shirts over long sleeves is cute also. You could look at Selena Gomez's style. She layers! Well good luck! Hope i helped!
Well, don't have like a lot of layers, especially if its really hot.





What I usually do is, either:


a.)put a shirt on, and than another shirt over so you can see the first shirt's sleeves, and the bottom. Make sure, they go together though.





b.)put on a cami, and a shirt over it. Pull the cami down so you can see the bottom (:
I dont like the layedered look with like 2 shirts for color or whatever but i really like a jacket and top combo like this:


http://www.eclipsestores.com/en/trends/i鈥?/a> (the first on the 2nd page..


And you can dress it up with nice jeans and boots and a necklace or whatever you like... It not too too hard just find a jacket you liked and dress it up to your style..
http://www.ehow.com/how_2149145_achieve-鈥?/a>











your welcome

How to activate layer mode on dreamweaver?

Use a Windows Vista


Dreamweaver: CS3How to activate layer mode on dreamweaver?
try going on the menu next to Common, click on Layout and there you'll have some options to include div tags





hope it helps





Norvell Abente


http://www.paraisocentenario.com

latex

highlight colors

facial care

triamcinolone cream