61. Reading Skills Comprehension: SIBERIA
SIBERIA Somewhere in Siberia 40 million years ago the sabre-toothed tiger flourished. It became extinct only about 10,000 years ago, and its descendants, the true tigers, began to extend their range, moving southward in search of more suitable habitats as successive phases of the Ice Age made Northern Asia uninhabitable. Today, deep in the snows of the Soviet… Read More »