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The major form by which carbon dioxide is transported in the circulatory system is:
Complex Phenomena
Events or situations that are multifaceted and difficult to understand due to the involvement of multiple interconnected factors.
Natural Scientists
Professionals who study the natural world using empirical evidence and scientific methods.
Gravity
A natural force exerted by a mass that attracts other masses towards its center.
Evolution
The process by which different kinds of living organisms are thought to have developed and diversified from earlier forms during the history of the earth.
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