number expressing the central or typical value in a set of data. Total of numbers divided by the number of items. To add numbers then divide by the number of items.

Movies often about cowboys in the American West. film, television drama, or novel about cowboys in western North America.

Geology The molten rock material under the earth's crust, from which igneous rock is formed by cooling.

in space separating things. In the space that separates two objects.

When every example of animal, plant is dead.

Strongly wishing to do/get what you want. To control exactly how something will be or act.

A period of time. To make your arm, leg muscles long to ease them.

parts left over after other parts. Bodies of human or animals after it has died. To be left undone (after other things changed).

Being talked about in the media.

causing disruption or annoyance through being unwelcome or uninvited.

relating to study of earth's physical structure and substance.

Of or relating to a volcano or volcanoes.

great in number.

group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding. Subsections of a genus (of plants, animals).