Examlex
Coral reefs are important and very unique ecosystems because they have more ______________ than any other comparible area of the world's oceans.
Bloodstream
The flow of blood through the circulatory system of an organism, delivering nutrients and removing waste products.
Gland Duct
A passage or tube in the body through which secretions from glands are conveyed to various organs or body surfaces.
Microvilli
Tiny, finger-like projections from the surface of some cells, increasing their surface area for absorption.
Goblet Cells
Specialized epithelial cells found in the respiratory and intestinal tracts, which secrete mucus to trap irritants and protect mucous membranes.
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