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Shelled invertebrate fossils of the Ordovician period
Persian leopard (Panthera pardus ciscaucasica), also called Caucasian leopard
The anterior pituitary is sometimes called the master gland because it secretes many hormones that r
Diphtheria. The bacteria that cause this disease, called Corynebacterium diphtheriae, proliferate in
The most polygynous primates live in groups with many more females than males.
A mother dies, a father loses his leg—such calamities shattered poor urban families. Orphaned street