That will be once every year
The circulatory and skeletal systems work together in the following way: skeletal system produces cells in the bone marrow while the circulatory system transports cells where they need to go (option A).
<h3>What is skeletal and circulatory system?</h3>
Skeletal system is the system that works as a support structure for your body. It gives the body its shape, allows movement, makes blood cells, provides protection for organs and stores minerals.
Circulatory system, on the other hand, are parts of an animal body comprising the heart, veins, capillaries and arteries. It circulates blood and lymph through the body.
According to the above description of both systems, the skeletal system produces blood cells in the bone marrow while the circulatory system transports these cells.
Learn more about skeletal system at: brainly.com/question/1283837
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Involuntary, meaning things in the body such as your heart is all regulated to act unconsciously while also receiving directives from the brain.
Answer:
600
Explanation: there is always a 3:1 ratio when you have a dominant and recessive trait.
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The answer is A.
It modifies and stores proteins received from the endoplasmic reticulum.
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