Examlex
Toward the end of the Acheulian period,a technique developed that enabled toolmakers to produce flake tools of a predetermined size,which was called the __________ method.
Seasonal Pattern
Variations in mood and behavior that occur at the same time every year, often related to changes in seasons and daylight.
Methadone
A synthetic opioid used medically as a painkiller and in the treatment of heroin addiction.
Morphine
A potent opiate analgesic drug derived from the opium poppy used for pain relief.
Heroin
An opioid drug derived from morphine, highly addictive and illegal, commonly used for its euphoric effects.
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