I'm not entirely sure on this one... But I think it's 1. cell division helps animals repair old cells..
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D. It provides information about the subject of an experiment.
Background research is research prior to conducting an experiment.
Explanation:
Background research is important so as to fully understand the variables that are being controlled and tested in an experiment, and their relationships that will give insights into how to design the experiment. The background research is also important in identifying the research problem setting up of a good hypothesis.Background research also reduces the rate of failure of an experiment due to proper preparation.
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Answer:
1.) DNA Fingerprinting- a positive out come of this is when some one commits a crime and leaves finger prints they can be used to find the person who committed the crime
Answer:
Similar structures but with different functions
Explanation:
Adenine and guanine
Thymine and cytosine
