Hi fellows, Last time in school, we learned what organisms need to survive... My teacher listed: energy source, water, minerals, vitamins. I was just wondering where is an oxygen or any kind of gases. I asked Her, "what about an oxygen or some kinds of gases, I think organisms cannot live in a vacuum" and She said: there are some types of organisms that can live in a vacuum. Until now I thought that it's impossible to grow/live in a vacuum. But in addition do all organisms really need energy source, etc as above and are there really organisms that can live in a vacuum? I tried to look in google, however couldn't find anything. If You are sure of the right answer please tell, and if you have, can you paste some links on the topic? Thanks all. p.s There is also something that bothers me. "All organisms need energy source, water, minerals and vitamins" + "there are some types of organisms that can live in a vacuum" .... :-s It doesn't make any sense, at least for me, do You think the same way?