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:
Because a food chain is very limited and only follows one path while a food web consists of many food chains made into one food web
Explanation:
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A drug is any chemical substance that alters the body physically or mentally for a non - nutritional purpose.
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They use the directions found in DNA to make Proteins & Polypeptides.
Answer:
I believe it's c I could be wrong but I'm pretty sure
