10 – sleep - https://www.psychologytoday.com/blog/the-land-nod/201307/sleep-talking-what-does-it-mean
http://www.everydayhealth.com/healthy-living/why-do-we-talk-in-our-sleep.aspx
9 – babies - https://www.quora.com/Do-babies-understand-each-other
https://news.byu.edu/news/babies-can-read-each-other%E2%80%99s-moods-study-finds
8 – oil - http://www.ibtimes.co.uk/world-energy-day-2014-how-much-oil-left-how-long-will-it-last-1471200
7 – fish - http://www.fishchannel.com/fishkidz/beyond-beginners/why-dead-fish-float.aspx
 6 – air - https://www.reddit.com/r/askscience/comments/3rzpw7/will_we_ever_run_out_of_oxygen/
5 – ghosts - https://www.psychologytoday.com/blog/believing-bull/201106/why-do-people-believe-in-invisible-beings
https://answers.yahoo.com/question/index?qid=20141031054942AAB2zDd
4 – earth & sun - https://www.quora.com/What-would-happen-if-the-Earth-and-the-Sun-switched-places-instantaneously
3 – cd - http://www.explainthatstuff.com/cdplayers.html
2 – moon - http://www.space.com/7267-moon-daylight.html
1 – rainbow - http://eo.ucar.edu/rainbows/