Why Is an Open Circulatory System Less Efficient Than a Closed

question 1

Multiple Choice

Why is an open circulatory system less efficient than a closed circulatory system?

• A)Metabolic wastes cannot be removed from tissues in an open circulatory system.
• B)There is no heart to pump the blood in an open circulatory system.
• C)It is more difficult to quickly deliver O₂ to specific tissues when needed with an open circulatory system.
• D)Open circulatory systems lack respiratory pigments that bind to oxygen.

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