Explanation:
In a general way cells communication to each other through chemical signal which can be regarded as their language. Hormones, compounds and neurotransmitters behave like words that are spoken because they tell the cell about its environment and they also pass messages to the cells and the cell acts on the signal received. Each cells has receptors through which they detect different actions to be taken or signals that needs to be responded to, so they are always underground biological conversations.
Wind, waves, solar panels. etc
As the board continues along the surface, friction in the wheels causes the board to lose energy, which causes the board to slow down and come to a stop.