Hellow guys, Welcome to my website, and you are watching 코알라가 하루에 20시간을 자는 이유 (The reason why koala sleeps 20 hours a day.). and this vIdeo is uploaded by EBS 컬렉션 - 사이언스 at 2018-03-08T19:00:00-08:00. We are pramote this video only for entertainment and educational perpose only. So, I hop you like our website.
