I'm guessing changing gravity
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C. Pepsin is the hormone that is produced mainly in the stomach and regulates secretions of gastric juice.
Answer: Rosalind Franklin
Franklin created an x-ray photograph that allowed Watson and Crick to work out the 3D structure of DNA.
Experimentation (or the experiments the scientist was doing for 10 years) could be wrong or done in an inappropriate way. The only way to know if the information is valid is by checking the way the experimentation (data) was done as well as making sure to check all other factors
