Experiment one, because she repeated the experiment several times.
They Grab Information to gain Hypothesis , Then test it to get the Scientifical Answer for the problem.
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Answer:
the ductus arteriosus is a normal blood vessel that connects two major arteries — the aorta and the pulmonary artery — that carry blood away from the heart. The lungs are not used while a fetus is in the womb because the baby gets oxygen directly from the mother's placenta.planation:
Answer:
monosaccharide: any of the class of sugars (e.g., glucose) that cannot be hydrolyzed to give a simpler sugar.
polysaccharide: a carbohydrate (e.g. starch, cellulose, or glycogen) whose molecules consist of a number of sugar molecules bonded together.
Explanation: