Damselflies have a life span of only 1-2 years, so during that time, they mate/reproduce, grow and hunt. They are useful because they only live by water holes that do not have water pollution, have a...
There is no oxygen in space, the only foreign substance your likely to come across are gamma rays from the sun, or foreign planets. If in bare space, the side of your body pointing towards the sun...
because when you breath out your mouth you've been eating stuffso it smells of what you have been eating. if you breath through your nose, it doesn't smell of anything.