In your own words, write 1 sentence to answer the following question:

What is the function of the circulatory and respiratory systems and how do they work together?

The function of the circulatory system is to transport oxygen, nutrients, hormones, and waste products throughout the body, while the respiratory system is responsible for exchanging oxygen and carbon dioxide between the body and the external environment; together, they work to deliver oxygen to the body's cells and remove waste products.

The function of the circulatory system is to transport oxygen, nutrients, hormones, and waste products throughout the body, while the respiratory system is responsible for exchanging oxygen and carbon dioxide between the body and the external environment; they work together by coordinating the delivery of oxygen-rich blood from the lungs to the body's tissues and removing waste products like carbon dioxide from the body.

The circulatory system transports oxygen, nutrients, and hormones to cells and removes waste products, while the respiratory system exchanges oxygen and carbon dioxide between the body and the external environment, and they work together by supplying oxygen to the circulatory system and removing carbon dioxide, allowing the body to function properly.