According to The Guardian, the UN estimates that between 150-200 species of plants and animals become extinct each day, many without ever being officially discovered and classified by scientists. Mother Nature Network id... More »

www.reference.com Science Biology Zoology

Some animals that have become extinct during the past century include the Golden Toad, the Zanzibar Leopard, the Po'ouli, the Pyranean Ibex and the West African Black Rhinoceros. Other extinct species include the Quagga,... More »

www.reference.com Science Biology Zoology

The extinction of dodo birds is attributed largely to human activities. Dodos were large and flightless birds that lived on the eastern side of Madagascar. They lived and thrived on the island through the later part of t... More »

www.reference.com Science Biology Zoology

Organisms of all types are classified to make it easier to identify species of plants and animals, to help sort and track similarities and differences between different parts of various kingdoms and to help scientists de... More »

Nitrogen is required for plants and animals to grow and to survive. Plants and animals need nitrogen for the production of amino acids that make up proteins and DNA. More »

www.reference.com Science Biology Zoology

Rhinoceros vipers, which are known to scientists as Bitis nasicornis, are sedentary pit vipers that hail from the forests of central Africa. These snakes are primarily associated with forest pools and low-lying areas tha... More »

www.reference.com Science Biology Zoology

Based on studies that examine factors such as communication, learning and memory, scientists have determined that several animals possess high intelligence. Humans are the most intelligent animals, and other animals that... More »