struggle

National Geographic Documentary – Struggle for existence – Wildlife Animal

The concept of the struggle for existence concerns the competition or battle for resources needed to live. It can refer to human society, or to organisms in nature. The concept is ancient, and the term struggle for existence was in use by the end of the 18th century. From the 17th century onwards the concept … Read more

National Geographic Documentary HD Polar bears and struggle to survive

The bear family, Ursidae, is believed to have split off from other carnivorans about 38 million years ago.[15] The Ursinae subfamily originated approximately 4.2 million years ago.[16] The oldest known polar bear fossil is a 130,000 to 110,000-year-old jaw bone, found on Prince Charles Foreland in 2004.[17] Fossils show that between ten to twenty thousand … Read more