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Arisa [49]
3 years ago
7

Which of these is an example of a chemical change?

Biology
2 answers:
Alja [10]3 years ago
8 0

Answer:

need to see the examples to help you answer

Explanation:

notsponge [240]3 years ago
6 0

Answer:

Explanation:

Plz be more specific

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3B):   A Positive Control  =====> <u>should be designed to not give the desired outcome of the experiment. In the example above, bacteria which do not carry a drug resistance marker should not be able to grow on a petri plate containing antibiotic. If growth is observed, it is a red flag that something is wrong with the experiment.</u>




Hope that helps!!!                                  : )






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