You're alive! And so are all the plants in your garden, the birds in the sky, and the fish in the ocean! But how do we know they're alive? What does it even mean to be alive in the first place!? Join Jessi and Squeaks to learn how scientists decide if something is living or non-living! #education #science #elementary #learning #biology #kids ---------- Love SciShow Kids and want to help support it? Become a patron on Patreon: www.patreon.com/scishowkids ---------- Looking for SciShow elsewhere on the internet? Facebook: www.facebook.com/scishow Twitter: www.twitter.com/scishow Tumblr: scishow.tumblr.com Instagram: instagram.com/thescishow SOURCES: www.learner.org/courses/essential/life/session1/ideas.html wqed.pbslearningmedia.org/resource/tdc02.sci.life.colt.lp_living/living-vs-nonliving/ utahscience.oremjr.alpine.k12.ut.us/sciber00/7th/classify/living/2.htm Video of Bird Singing: www.youtube.com/watch?v=hRijsuO2-Sc