Riddle #2641

Question: Your friend is OCD and has to have things in a particular way. She even labels her socks so that the sock for the left foot will always be worn on the left foot and vice versa. Why did she lace her left shoe with a brown lace and the right one with a green lace?

Question: Surrounded by life , yet life is its biggest enemy. But without life there is no need for it to exist. What is it?

Question: During what month do people sleep the least?

Question: When is 99 more than 100?

Question: People see through me, but none pass through without killing me. I can be anywhere, and can be seen double or single. What am I?

Question: The more you add, the less it weighs.