Why reefs are where they are
Why reefs are where they are
Warm-water coral reefs are built by coral polyps that secrete calcium carbonate skeletons. Inside their tissues live zooxanthellae, microscopic algae that photosynthesise and share food with the coral.
Step-by-step lessons covering OCR A GCSE Geography Distribution of coral reefs for GCSE Geography. Each lesson works through exam-style questions in Component 01, Component 02 and Component 03 format. Build a solid grasp of core physical and human processes before tackling the evaluation- and decision-making-style questions used in the final papers, which carry the most marks.