There are bacteria that help plants grow,others that get rid of dead animals and plants decay,and some that live in soil and make it better for growing crops.

• 有些细菌能帮助植物生长，另一些细菌则通过腐蚀来消除死去的动物和植物，还有一些细菌，使土壤变得对种植庄稼更有好处。