References

Did the Greek Gods really exist?
https://www.reference.com/art-literature/did-people-worship-zeus-d6ae9db40e0985c5#

http://www.allabouthistory.org/greek-gods.htm

Where does the iron in our blood come from?
https://www.ucsfhealth.org/education/hemoglobin_and_functions_of_iron/

Do all living things dream?
http://www.popsci.com/science/article/2012-01/do-animals-dream

https://books.google.co.uk/books?id=moCaFZSg1UIC&pg=PA121&lpg=PA121&source=bl&ots=KecdPyPvCY&sig=V5nqIAU8DabNynQA4WYb7yMQU4E&hl=en&ei=ARvuSfrsB5z8tgO0g-XoAQ&sa=X&oi=book_result&ct=result&redir_esc=y#v=onepage&q&f=false

https://en.wikipedia.org/wiki/Rapid_eye_movement_sleep#REM_sleep_in_animals

How many Black Holes are there in the Universe?
http://hubblesite.org/explore_astronomy/black_holes/encyc_mod3_q7.html

https://www.quora.com/How-many-black-holes-are-present-in-our-galaxy

How many bees are in one hive?
https://www.bbka.org.uk/learn/general_information/life_in_the_hive

https://www.orkin.com/stinging-pests/bees/honey-bees/colony/

What would happen if you couldn’t blink for 7 hours?
https://www.quora.com/What-happens-if-you-dont-blink-for-a-substantial-amount-of-time

What is dirt made up of?
https://www.garden.com/garden-articles/what-is-dirt-made-of-anyway/63/

https://en.wikipedia.org/wiki/Ecosystem

Are there long term effects to cannibalism?
https://news.utexas.edu/2011/07/14/the-dangers-of-cannibalism

http://www.healthmap.org/site/diseasedaily/article/spotlight-why-cannibalism-bad-you-72612

http://www.todayifoundout.com/index.php/2014/07/cannibalism-unhealthy-just-awful/
Is our Moon moving away from us?
http://curious.astro.cornell.edu/about-us/37-our-solar-system/the-moon/the-moon-and-the-earth/111-is-the-moon-moving-away-from-the-earth-when-was-this-discovered-intermediate

https://www.spaceanswers.com/solar-system/will-the-moon-ever-leave-earths-orbit/

Can a person die from a bad smell?
https://www.quora.com/Is-it-possible-to-smell-something-so-bad-that-you-die

http://www.askabiologist.org.uk/answers/viewtopic.php?id=285