The runners muscles have accumulated lactic acid.
Osmosis happened. The water inside the paramecium was attracted to the high concentration of salt outside so it moved through the cell membrane, thus causing the paramecium to lose water and shrivel.
Answer:
Speed
Explanation:
Speed is a scalar quantity that refers on how fast and object is moving, speed can be thought of as the rate at which and object covers distance. An object with no movement at all has a zero speed.
Cant be velocity because it has to include distance for example "80 miles toward east"
acceleration is almost as velocity just includes going faster or slower or turning.
Hope that helps :)
