electronic waves
receptor proteins
signals travel from neuron to neuron through neurotranmitters
The pons contains nuclei that relay signals from the cerebrum to the cerebellum, and nuclei concerned with sleep, hearing, equilibrium, taste, eye movements, facial expressions, facial sensation, respiration, swallowing, bladder control, and posture.
sense organ
The signals is the duration, intensity of light or the temperature
They have radios stationed in all boats. <><><> Well, there are radios in MOST ships, and many boats. Besides radio, ships communicate with each other by horn signals. There is a standard set of signals that indicate actions that a ship is about to take.
The puffer fish gives electronic signals to communicate
they give signals to eachother
Signals or symbols that communicate something
Smoke signals for example.
Boats (people) can communicate silently with flags or light signals.
They used smoke signals to communicate with one another.
standardized warning signals and actions for CONUS and U.S. territories
There are nine different ways in which hammerhead sharks communicate. One of these methods is by shaking the head back and forth to get the attention of the younger sharks.
There were many ways of communication. Smoke signals, fire signals, courier pigeons, flag signals, and foot traversed letters. It was more complicated back then, but it was done that way for much longer than the ways we communicate now.
The American Indians created Smoke signals to communicate to other tribes over 750km away
Indians communicated with emigrants by smoke signals.