References:

10. Why do we feel cold when we get out of the bathtub?
http://mentalfloss.com/article/54655/why-does-it-feel-so-cold-when-you-step-out-shower
http://coolsciencedad.blogspot.com/2012/12/why-is-it-cold-when-you-get-out-of.html


9. How do potatoes create electricity?
https://sciencing.com/science-project-electricity-potato-6118685.html
https://www.teachengineering.org/activities/view/cub_energy2_lesson04_activity2
https://www.livescience.com/62570-potato-battery-conduct-electricity.html


8. If all the lights on Earth were turned off, would we see more stars?
https://www.newscientist.com/article/dn10245-editorial-turn-out-the-lights-stare-at-the-stars/
https://www.quora.com/If-we-were-to-turn-off-every-light-on-earth-would-we-see-the-stars-more-clearly
https://gostargazing.co.uk/light-pollution/

7. What was the original colour of apples?
https://articles.extension.org/pages/66371/red-color-development-in-apple-fruit


6. Who was the first known person to ‘combine’ foods?
https://www.nationalgeographic.com/foodfeatures/evolution-of-diet/
http://cogweb.ucla.edu/Abstracts/Pennisi_99.html

5. Can birds fly without feathers?
https://askabiologist.asu.edu/how-do-birds-fly
https://www.factmonster.com/dk/encyclopedia/nature/birds

4. Why do some Crustaceans have one claw bigger than the other?
https://www.sciencedaily.com/releases/2013/07/130716075837.htm
https://sites.psu.edu/siowfa15/2015/10/05/that-crab-with-one-big-claw/

3. Why can’t animals laugh?
https://news.nationalgeographic.com/2015/06/150613-animals-laughter-apes-evolution-science/
https://animals.howstuffworks.com/animal-facts/do-animals-laugh.htm

2. Can a shadow have a shadow?
https://www.sciencefocus.com/science/if-you-could-make-yourself-invisible-would-you-still-have-a-shadow/
https://www.quora.com/How-is-shadow-formed
https://www.pa.uky.edu/sciworks/xtra/shy.htm

1. Do bones have blood in them?
https://askabiologist.asu.edu/bone-anatomy
https://www.sciencedaily.com/terms/bone_marrow.htm