The Manual Autoclave is primarily used by veterinarians or surgeons, but is also used in a range of other settings, including active surgery center, medical practice, dental office, schools, industrial lab, doctor's clinic, or tattoo establishment. Tuttnauer M Series Manual Autoclave Features: Reliable and durable.
Vote for this answer. It is estimated that the first life forms on earth were primitive, one-celled creatures that appeared about 3 billion years ago. That's pretty much all there was for about the next two billion years. Then suddenly those single celled organisms began to evolve into multicellular organisms.
Best Answer: The earliest record we have of a creature that looks like a modern human is only about 100,000 years old, which is just an eye blink in the history of life on Earth. Although life has been on this planet for around 3.8 billion years, humans have only been here for a tiny fraction of that time.