How long have microbes existed?
3.5 billion years
Microbes, also known as microorganisms, have existed on Earth for billions of years. The earliest forms of life on Earth are believed to be simple microbes that evolved around 3.8 billion years ago. These early microbes were likely similar to modern-day bacteria and archaea. Over time, these microorganisms diversified and evolved into different forms, including single-celled eukaryotes and multicellular organisms. Microbes are an essential part of our planet’s ecosystem and play important roles in many biological processes, such as nutrient cycling and decomposition. They also have numerous applications in medicine, industry, and biotechnology.
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