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non-indigenous species which reproduce and spread more rapidly than indigenous species. This allows them to displace the indigenous species.
the tube through which urine passes from the bladder to the exterior.
animal wastes (particularly urine) that contain materials high in nitrogen.
a molecule found inside red blood cells that can carry both oxygen and carbon dioxide.
the broad band of tissue in plant organs under the epidermis, including the parenchyma cells and...
cartilage with few collagen fibres and no elastin fibres. It reduces friction in joints,...