Agkistrodon contortrix (Northern Copperhead) is a species of snakes in the family vipers. They are found in The Nearctic. Individuals are known to live for 29.8 years.
Definition: The largest scale biogeographic division of the earth's surface based on the historic and evolutionary distribution patterns of plants and animals.
Definition: Single birth offspring quantity. The proportion or number of offspring produced from a single pregnancy (mammals) or ovulation (fish) or nesting (birds).