Their experiments rejected the hypothesis of spontaneous generation.
Redi was the first one who showed with his experiment that the theory of spontaneous generation could not be supported. His experiment with three glass jars with meat (the first was open, the second was covered with a loos netting, and the third was completely closed) showed that the meat cannot produce flies and maggots by itself (meat could not transform into flies as proposed in the theory of spontaneous generation).
Paster approved that cells cannot be generated spontaneously. Pasteur did the experiment with swan-necked flasks and straight-necked flasks (control). Microorganisms fell into the straight-necked flask entering the broth from the surrounding air, so he found living organisms only in that control flask.
The processes that turns sediment into sedimentary rock is the compaction and cementation of sediment. Hope this helps!
Antibiotics are ineffective in treating viral infections because Antibiotics kill only living cell. Antibiotics treat bacterial infections but not viral infections. Foe example, an antibiotic is an appropriate treatment for step throat, which is caused by the bacterium Streptococcus pyogenes. However, it is not the right treatment for most sore throats, which are caused by viruses.
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in the first paragraph a fact is challenged
and the second one provides an example