Answer:
The plateau is caused by the movement of fewer sodium ions across the cell membrane.
Explanation:
The long plateau phase is due to the movement of calcium across the membrane.
It is important because you need to increase your heart rate by being more active because it will help you build your strength
Answer:
Tubules?
Explanation
The trachea, spiracle, and air sac are part of their respiratory system, Howeber, the tubules are what take away the carbon dioxide from their system. Im not sure if they produce the carbon dioixde. But they are a part of what removes the carbon-dioxide from their body.
Plants. Cuz plants breathe carbon dioxide.
