Answer:
I think the answer is C: An experiment that includes one group for which the scientist controls all variables
Explanation:
Robert Koch is best known for establishing a link between bacteria and disease.
Robert Koch was a German doctor that made an important contribution to the field of microbiology and public health. During his experiments he identified the particular microorganisms that cause diseases such as tuberculosis, cholera, and anthrax. Koch’s research resulted to the development of Koch's postulates, which are four general principles that links specific microorganisms (such as bacteria) to specific diseases and is being used today in medical microbiology as a standard.
<span>Jackson
performed an experiment in which he analyzed the elemental components of
several unknown compounds. His results are shown in the table:
</span><span>Jackson concludes that only Unknown 2 could be a
protein.
</span><span>Of the explanations that supports Jackson's
conclusion is :
</span>
B. Proteins have some amino acids that contain
sulfur, whereas most lipids, nucleic acids, and carbohydrates do not contain
sulfur.
Answer: "reproductive success" ; or: "reproducibility" .
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