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if just donated a 1000 rice grains... i think it is a good think to do!

chek this site out: http://www.dartmouth.edu/~rpsmith/Oxygen_Transport.html
hope its for any help.

Thel lowest iq would be interesting as well...

Give me your opinion about Global warming. Is it caused by humans or is it a natural event?

Thanks a lot! i think i understand!

Not only water.. human activity

Thanks for your replay... but i stil dont get it

Im not a physics genius

.

Check those books, they are realy good!
http://www.drclarkbooks.com/

Hey,
look at these videos by Dr. Tom Van Flandern, former Chief Astronimer for the United States Naval Observatory. See remarkable monuments, "T" shaped craters, gigantic glass tube systems, ancient forest remains and grand edifices that will leave you speechless. http://youtube.com/watch?v=5u-20g7Bwdw

It´s incredible!

I was wondering why does an electron not just bumps into the nucleus? they explained me, but i don´t understand. I know that there are many more electrons moving around and that they could repel each other, but how is it with an atom with only one electron? Has it to do with the speed of an electron?
Greets,

Leeuwenhoek