Neural tube defects are birth defects of the and
a.
neurons . . umbilical cord
b.
brain . . spinal cord
c.
brain . . umbilical cord
d.
spinal cord . . umbilical cord

select the best answer from the choices provided

a
b
c
d

A1500 w electric heater is plugged into the outlet of a 120 v circuit that has a 20 a circuit breaker. you plug an electric hair dryer into the same outlet. the hair dryer has power settings of 600 w, 900 w , 1200 w, and 1500 w. you start with the hair dryer on the 600 w setting and increase the power setting until the circuit breaker trips. under what setting does the circuit breaker trip.