Bacteria lives everywhere because they have ability to survive in all conditions; in addition, they adjust themselves according to environment but exhibit great ecological and economic importance. They are useful for recycles of nature. Additionally, many bacteria involve in the steps of nutrient cycles e.g. carbon cycle are controlled by bacteria due to decomposition of remained dead organism. Moreover, denitrifying bacteria plays a pivotal role in denitrification. The genus rhizoxin, lives in root nodules of legume plants converts nitrogen gas into nitriles. Finally, if bacteria were not present in universe, the Co2 from the atmosphere would have diminished thus there would have been no photosynthesis then no possibility of life on earth.
Summaiya Afzal Khan
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