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Land biomes are most commonly defined by
Pericardium
A membrane surrounding the heart and consisting of an outer fibrous layer and an inner double layer of serous membrane.
Cartilage
A flexible, connective tissue found in various forms throughout the body, including joints, ear, and nose.
Chondrocytes
Cartilage cells.
Blastocytes
An early stage of embryonic development in mammals, consisting of a hollow sphere of cells that implants in the uterine wall.
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Q84: Based on the evolutionary tree shown below,