In the Ségognole 3 cave near Paris, scientists have found what may be the oldest 3D map in the world. It contains drawings of the surrounding terrain that date back more than 20,000 years. This useful ...
A preposition is a word that tells you where or when something is in relation to something else. Examples of prepositions include words like 'after', 'before', 'on', 'under', 'inside' and 'outside'.