IB Biology D4.3.7 Coral reef threats
IB Biology D4.3.7 Coral reef threats
Practise explaining coral reef threats using temperature, bleaching, zooxanthellae loss, CO2 uptake, acidification and calcium carbonate evidence.
How this is tested
- explain bleaching by linking high temperature to loss of zooxanthellae from coral
- interpret graphs showing how temperature affects zooxanthellae density or photosynthesis
- link dissolved CO2 to ocean acidification and reduced calcium carbonate deposition