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Illustration of three small round micro organisms. An illustration of earth covered in waste. An illustration of microbes converting dead matter into food for plants. Several small oxygen molecules.
Gauge readings: Bio, none. Temperature, 20 degrees Celcius. Oxygen, 1X. pH, 7. Chemical energy, none.
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BB
Some types of microbes do cause disease. However, most are beneficial and do us no harm. For example, microbes are the ultimate recyclers. Without them, decomposition would not occur. Imagine Earth covered with all sorts of waste. We would be layers deep in dead plants and animals, not to mention piles of garbage! Then, think of the diseases we would have!

Our ecosystem needs microbes to decompose matter and return nutrients to the environment. Without nutrients, plants would not grow in soils. Without plants, there would be less oxygen. Before plants evolved, all the oxygen in our atmosphere came from microbes. Today, microorganisms in the sea provide half of the oxygen. Our survival depends on these tiny organisms!

Macro
Interesting as this may be, BB, your fascination with microbes doesn’t explain why I’m here.
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