Por qué es la marihuana tan popular entre los jóvenes?

Match each organ or function with its body system. produces urine large intestine ureters mouth filters blood absorbs nutrients from food

Compare and contrast the adaptations of free-living flatworms and parasitic flatworms

Aneuron is stimulated with an electric pulse. the action potential is detected at a point 3.70 cm down the axon 0.0052 s later. when the action potential is detected 7.20 cm from the point of stimulation, the time required is 0.0063 s. what is the speed of the electric pulse along the axon? (why are two measurements needed instead of only one? )