Examlex
What compound forms when sunlight acts on 7-dehydrocholesterol?
Plastic
Plastic is a synthetic material made from a wide range of organic polymers, such as polyethylene and PVC, that can be molded into shape while soft and then set into a rigid or slightly elastic form.
Psychoanalytic Theory
A psychological theory originated by Sigmund Freud that emphasizes the importance of unconscious processes in shaping behavior and personality.
Unconscious Needs
Desires or motivations that influence behavior and feelings without an individual's conscious awareness.
Epigenetics
A field of genetics that studies how external or environmental factors can switch genes on and off, affecting gene expression without changing the DNA sequence.
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