THC mimics which neurotransmitter in the brain?

Cocaine can be used medically for which of the following procedures?

By 1900, Buenos Aires had grown to become a large city, peopled in many cases by European immigrants or their children, making Argentina a major destination in the age of mass migration.

British rule in India opened some low-level civil service jobs to previously excluded castes, but upper ranks remained dominated by English officials.

After Brazil abolished slavery in 1888,  coffee plantation owners quickly turned to Italy as a source of agricultural labor.

European migration after 1850 was mostly driven by religious persecution, especially in northern and western Europe.

European missionary activity in Africa had immediate, widespread religious conversions among native populations.

On a hot day, the thermometer reads 105 °F. What is the temperature in degrees Celsius?

The physician orders acetaminophen 375 mg for a child weighing 31 pounds. The safe dose range for acetaminophen is 10-15 mg/kg/dose. What is the safe dose range for this child?  Is this a safe dose for this child? (Round to nearest whole number)

The recommended dosage of Amoxicillin is 40 mg/Kg/day in divided doses every eight hours.  What amount should an 18 pound child receive for a dose at 0800?