A travel time graph can be used to find the distance of any earthquake epicenter.
A travel time graph is a graph of the time, usually P or S waves that is taken at various points as a function of distance from the epicenter of an earthquake seismic source. Information about the earth’s interior is obtained using the velocity of seismic waves through various substances.
Motor end plates are associated with muscle contraction definitely, and I would say also <em>neuron transmitter, </em>although I'm not sure about that one.
Answer:
They are cells that contiain only one complete set of chromosomes
