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.
What are the origins of life on Earth? How did things go from non-living to living, from something that could not reproduce to something that could? How can a collection of inanimate atoms become animate? How did organic molecules achieve a high enough level of complexity to be considered as living?