請問全世界最多的生物是什麼?why?外型?如何進食?他會對外界作出what反應????

是細菌!!!!
他們是肉eye看不見的
他們繁殖得很快
1分鐘可以分裂100~1000個

Human being, why? Becuase we have adapted to our living and we have controlled alomost everything on the world. However, we haven't known that wether other livng are living on the other star.