Technology Big history

1. Big HistoryJean Lowry50607 2. Big History…Cont’d“Big Historyis a field of historical study that examines history on a large scale across long time frames through…

Documents CORAL REEFS

CORAL REEFS CORAL REEFS Corals Overview Coral reefs are underwater structures made from calcium carbonate secreted by coral polyps. Although coral is often mistaken for…