someone who works to protect the environment from the damaging effects of human activity:

the study of organisms that live in the sea or ocean, their behaviors and interactions with the environment.

the set of keys on a computer or typewriter that you press in order to make it work

a program that searches for and identifies items in a database that correspond to keywords or characters specified by the user, used especially for finding particular sites on the World Wide Web

a gradual increase in world temperatures caused by gases such as carbon dioxide that are collecting in the air around the earth and stopping heat escaping into space:

the natural world, as a whole or in a particular geographical area, especially as affected by human activity

someone who studies the buildings, graves, tools, and other objects of people who lived in the past:

the scientific study of the basic characteristics of substances and the ways in which they react or combine:

the scientific study of the human mind and its functions, especially those affecting behaviour

a restaurant provided by an organization such as a college, factory, or company for its students or staff

a computer program that makes it possible for you to read information on the internet:

lasting for a long time or for ever