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These species are all at risk of extinction. Species with slow life-h
Greenstick Only one side of the shaft is broken, and the other is bent (like a greenstick); usually
Compression Occurs in vertebrae subjected to extreme stresses, as when one falls and lands on his or
Hip Typically occurs as a result of a fall; with osteoporosis, hip fractures can occur as a result o
Breast cancer. Notice the tumor growing within a lactiferous gland, which occurs in infiltrating duc
Example of parapatric speciation: velvet walking worms in Tasmania.