Which organisms capture atmospheric nitrogen for the process of nitrogen fixation?

Y’all i need answers plss people are saying me and my brother look alike although we’re two different ages. one year apart i’m a girl, btw i’m thinking we could be fraternal twins idk my parents and my friends think we look alike

The idea of spontaneous generation was disproved by in a experiment involving jars of meat

The cluster of developing cells from conception until birth is called an