Examlex
Which of these animals does not have a closed circulatory system?
Oxygen
A chemical element vital for life, involved in cellular respiration and provided in medical treatments to support breathing.
Abnormal White Blood Cells
White blood cells that exhibit unusual size, shape, or structure, which can indicate a range of health issues, including infections and blood disorders.
Bone Marrow
A soft, spongy tissue found inside bones, responsible for the production of blood cells.
Lipoproteins
Complex particles composed of lipids and proteins that transport fats through the bloodstream.
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