Living Thing
Creature, Organism
noun
A life thing is a living thing, a creature, or an organism.
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
海の中には、色々な生物がいます。
There are various creatures in the sea.
あの生物は一体何だったんでしょう。
I wonder what that creature was.
前回の生物のクラスのノート、見せてくれないかな。
I'm wondering if you can show me your notes from the last biology class.