Neurons, also known as nerve cells, send and receive signals from your brain. While neurons have a lot in common with other types of cells, they’re structurally and functionally unique.
The third law of motion says: for every action, there is and equal and opposite reaction. In the case of the octopus, this is nicely demonstrated with it's method of travelling. The octopus makes an action, which is it shooting water at high rates in a certain direction, and the equal and opposite reaction is that the octopus's shooting of water in certain direction, moves him into the opposite direction with the rate that it is shooting the water.
Mud will keeo the foot print thing of it like this you cannot walk on water so there is no footprint sand blows easy so it wont stay either mud is soft and moldable so your footprint would stick and you cant have a footprint on rock cause its hard
