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Arteries
Veins
Both A & B
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What carries blood back to the heart?
What causes the mottling of the dental enamel
What determines the sex of a child
What do eukaryotic cells have that prokaryotic cells do not?
What do plants, which grow in salt-rich soils, say?
What does the following pedigree chart represent ?
What happens each day when the leaf of a plant is first exposed to light?
What happens to a person Who among the following receives the wrong type of blood -
What happens to excessive phenylalanine accumulation in the blood of phenylketonuria patient ?
What happens when a rose is illuminated with green light?