Week+3

   DestructiOn Of the OzOne layer       The Ozone Layer is located in the stratosphere, and it protects us from the UV rays that comes from the sun giving us the posibility to live in Earth. Nowadays, it has a big hole that in some places has caused the decrease of about 60% in the amount os the stratospheric ozone. This destruction is caused by us, because we use a lot aerosols, solvents, propellants and refrigerants that have chlorofluorocarbons. The action of this gases in the satratosphere cause CL atoms to release by UV radiation on their molecular links, each atom of CL destroys thousands of molecules of ozone transforming them into dioxide.

The excesive level of Uv radiation can impair the health of people causing them skin cancer, eye injuries (cataracts), and also can affect crops because it eliminates the cyanobacteria. So we have to start trying not to use the gases I've mention so that other generations of people can enjoy living in Earth, we can also let our country to join one of the 120 countries that participate in the Montreal Protocol to save our ozone layer.

media type="youtube" key="vuvdKhhQ1tU" height="344" width="425" Arianne Mass

= OoO- water pollution -OoO   = 70% of the Earth is made of water. Water is without any doubt the most important natural resource that exists on the planet. Water lets us survive, without water we wouldn´t survive even 1 week. Contamination is destroying our lakes, rivers, oceans, our planet and us. Every day less people have fresh water and the water price is getting higher in The Netherlands. That makes the number of deaths increase. Also the water pollution makes habitats disappear like swamps, rivers, etc…. Water is necessary to live like the Sun is necessary to the Earth, so take care of the water and save as much water as you can so we can preserve it for a better future.

=  = media type="custom" key="2441385" media type="custom" key="2441461" === To get knowledge about whats happening around the world enter to [|www.greenpeace.com] , join in and help the Earth. === ==Maia Etchar t ==

The galaxies
== To start I choose to write about the space because I find Interesting all about the space, stars and UFOS;now im going to talk about how the space was form : One of the Theories of how the galaxies and planets form ,is the big bang that consist in a big explotion that form all the galaxies and planets and stars .==

The ovnis They are famous because they are from other planets and that is interesting also because they are very difficult to see.** **here are some videos:** media type="custom" key="2545755"media type="custom" key="2545869" if you want to know more about aliens and ovnis visit :[|www.ovnis.com]and for the space you can visit:[|www.spacescience.com] ** by :Gabriel de la torre picho **
 * The ovnis are ships of the Extraterrestrial beings that are like humanoids that in other planets or galaxies.