Yes, as scientists could figure out what might have changed in the variables she used. Brainliest me and I can give you the whole system.
B.)Ecosystem
A community resides within an ecosystem, a population within a community, and an individual within a population
Answer:
D
Explanation:
Nuclear energy talks about all this
PCR allows for the analysis of DNA fragments through the comparison of the base pairs each molecule contains, which can then be used for genetic screening and the identification of individuals and DNA fragments
The answer is <span>-Only the few bacteria that were immune to the antibiotic survived and reproduced, making all their offspring immune to it as well.
Bacteria (or any other organism) are not able to make changes to their DNA in order to protect themselves or to learn to remove the receptors on their cell surfaces. If they were able to produce toxins against the antibiotics, they would all survive.
These leave the second choice as the correct answer. This is the real situation, and is a good example of natural selection.</span>
