At first I thought you were referring to the human circulatory system!
The Walker circulation or Thermohaline circulation is where cold, dense, salty water sinks in the arctic and Antarctic. This water flows along the sea floor, moving towards the poles. Warmer water from the equator then replaces this.
In terms of global warming, more ice is melting in the summer. Icebergs don't contain as much salt, and do they dilute the oceans at both poles. This reduces the density of the water, meaning it doesn't sink as efficiently. This in turn can slow or even stop ocean flows such as The Gulf Stream. the circulation is very significant- research it online for more info.
the circulatory system is the way it keeps your heart pumping
transport
Poriferans do not have distinct circulatory system. Instead water flow system support all these functions like circulatory, respiratory, excretory etc.
Help please!! :( right now PLEASE
The word circulatory is the key word. The circulatory system circulates blood throughout the body.
circulatory system
heart arteries veins
The three functions of the blood when the circulatory system is working with the respiratory system are to take in needed gases from the lungs, expel waste gases from the tissues, and carry hormonal messages that communicate the body's needs to the respiratory adn circulatory systems.
the hear tmakes itmove
blood, heart, blood vessels
Blood vessals ame blood
heart, arteries, veins