Don't Panic
Avoid injury
Salvage all you can
Obtain a source of water
Build a shelter
Find food
Hope that helped have a good day
They both can expel water from the polymer network
Answer:
Explanation:
It is called a double circulatory system because blood passes through the heart twice per circuit. The right pump sends deoxygenated blood to the lungs where it becomes oxygenated and returns back to the heart. The left pump sends the newly oxygenated blood around the body.
They evolved during the Cambrian explosion.