Natural Selection

[@mish_deluxe]

seriously you are the man.

[@xDestroyer2x]

These videos deserves more viewers than it gets.

[@TheSupremeRaj]

ha ha so thts where "Black-Widow" spiders get thier name from

[@1437sunshine]

are the requirements in order? great video, helped a lot, thank you so much

[@suryaksh88]

Thanks a lot! Love the end spider example :P. Also great help on natural selection!!

[@studywithme5998]

6:00 had me cracking up; love your vids this was honestly so helpful! thanks

[@nida072]

PERRFEECT! i luv how his videos are to the point and you get it! thx!!!

[@Diaryofaninja]

Wish I had you for my Biology teacher.

[@israelst.vincent1512]

u are a gr8 science teacher...crazy too...

[@missdemicarla]

BOOOOOM, penacilin!

[@yushiliang1]

SOOO FUNNY LOLOLOLOLOLOLOLOL!!! I love your videos. I laughed sooo hard while watching this. I LOVE your sense of humour. OMG, this is soo good.