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Across 1. the exact age of a fossil rock or geological event or person, using radioactive decay. 4. convert or be converted into carbon, typically by heating or burning or during fossilisation. 8. a two-wheeled handcart used especially by street vend. 10. before christ was born.

Down 1. stands for Anno Domini. 2. objects, information or documents about past events, people or places. 3. the study of human history and prehistory through the excavation of sites and the analysis of artefacts and other physical remains. 5. pottery,tools,weapons earliest to latest. 6. the study of past events, particularly in human affairs. 7. common era 9. before common era.