Answer:
Oxygen to us, climate/weather patterns, and provides us with seafood
Explanation:
Species.
The answer for that is easy to find on google. You should have just googled it.
Bacteria play important roles in the global ecosystem.
The ecosystem, both on land and in the water, depends heavily upon the activity of bacteria. The cycling of nutrients such as carbon, nitrogen, and sulfur is completed by their ceaseless labor.
<u><em>Features that helps in identifying a prokaryotic cell :</em></u>
In the prokaryotic cell the absence of organised nucleus is observed. Membrane bound organelles are also absent in the prokaryotic cell. The DNA present is the central part of the cell. which is termed as the nucleoid. The cell wall present in the prokaryotic cell is seen acting as an extra layer of protection, that is required for maintaining the shape as well as preventing it from dehydration. The DNA present is double stranded and circular