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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If a moving object loses mass, how can it keep its momentum constant?
A. by speeding up
A) unproductive wastelands I believe is the answer you are looking for.
<span>Fungi obtain nutrients by absorption</span>
