Which parts of the water cycle are caused by the force of gravity?

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? )

Where does the esophagus lead to in a frog?

Consider the activity and specificity of the three enzymes. pepsin is most active in the human and to digest