Examlex
An old saying described the social structure of medieval Europe as "those who pray,those who fight,and those who work." What does this saying really mean? Compare this social system and its eventual transformation during the high middle ages to the social structure of other societies during the same period.
Epigenetic Marks
Chemical modifications to DNA and histone proteins that affect gene expression without altering the DNA sequence itself.
Smoking
The act of inhaling and exhaling the smoke of tobacco or other substances, often associated with health risks.
Rooting
A reflex in infants that prompts them to turn their head toward anything that strokes their cheek or mouth, aiding in breastfeeding.
Cheek
The fleshy part of either side of the face below the eyes and between the nose and ear.
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