House mice introduced to a South Atlantic island are attacking and killing seabird chicks, such as the Tristan albatrosses. http://www.livescience.com/animals/07... Gangs of house mice have been caught attacking and killing seabirds 300 times their weight on an island in the South Atlantic Ocean. House mice (Mus musculus) were thought to pose little risk to island birds, until now. Now, video footage exposes tiny house mice as they invade the nests of young chicks and proceed to gnaw through chicks' feathers and skin before gorging on their entrails.
contour definition: The definition of contour is the outline of something, such as of a social or geographic boundary. (noun) Behaviors that are within the bounds of what is socially acceptable are examples of behaviors that fit within the contours o...
Contour lines are lines drawn on a map connecting points of equal elevation. If you walk along a contour line you neither gain or lose elevation. Picture walking along a beach exactly where the water meets the land (ignoring tides and waves for this example).he example at right is a section of a topographic map. The brown lines are the contour lines. The thin lines are the normal contours, the thick brown lines are the index contours. Notice that elevations are only marked on the thick lines.