Answer:
All of the systems on Earth are classified as open systems. However, the Earth system as a whole is considered a closed system because there is a limit to how much matter is exchanged. Our Earth system has four spheres: the atmosphere, the biosphere, the hydrosphere, and the geosphere.
Explanation: The term “Earth system" refers to Earth´s interacting physical, chemical, and biological processes. The system consists of the land, oceans, atmosphere and poles. It includes the planet's natural cycles — the carbon, water, nitrogen, phosphorus, sulphur and other cycles — and deep Earth processes.
A system is a group of independent parts that work together as a whole. The Earth has four major systems or spheres. These systems are the geosphere, the hydrosphere, the atmosphere, and the biosphere.
Answer:
thermoregulation and hormone transport
Explanation:
Homeostasis is the state of body in which body undergoes several chemical or physical changes to maintain the internal changes affected by external factors.
All systems in the body undergo different processes to maintain homeostasis and so Cardiovascular system maintain homeostasis through thermoregulation and hormone transport.
Cardiovascular system undergoes thermoregulation, in which heat is exchanged between the internal body organs, tissues and skin to maintain internal body temperature affected external thermal loads.
Cardiovascular system are responsible for blood circulation throughout the body and the blood transport hormones to different body organs or tissues. Hormones are chemical messenger that regulate behavior of different organs. All the endocrine glands secret hormones and release them into blood and then blood circulation transport them to suitable tissue for proper functioning.
Hence, the correct option is thermoregulation and hormone transport.
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