disprove of spontaneous genera

In the early 1600?s, people believed that living organisms could evolve from nonliving organisms. They proved this by saying that if a piece of meat was left out uncovered, that maggots would appear in a few days. These worms did not come from anything that they could see, so they assumed they came from the nonliving meat. In 1668, a man named Redi designed and completed an experiment tha

Pasteur did the third experiment, in 1862. He took Spallanzani?s experiment, and the critic?s statements, and combined the two. He boiled pond water to kill all the living organisms. He poured that water into two curved neck flasks. He then proceeded to break the neck off of one of the flasks at the base. The flask with the broken neck started to become cloudy in a few days, however, the other flask continued to stay clear. He proved that the microbial organisms could not come from something nonliving. The curve in the neck of the flask allowed air to flow in, however, it caught all the microorganisms in the neck.

t showed how this was not true. He took two pieces of raw meat, and left them out. He covered one so that nothing could get in, and left the other one open. The open one grew maggots, and the covered one did not, pr

Some topics in this essay:
, boiled pond water, spontaneous generation, boiled pond, pond water, living organism, pond water kill, water kill, air left, meat left, neck flasks, nonliving organisms, living organisms,