IB Biology D4.3.2 Positive feedback cycles
IB Biology D4.3.2 Positive feedback cycles
Practise positive feedback in global warming, including ice-albedo change, methane release, permafrost decomposition and ocean CO2 release.
How this is tested
- explain why melting ice lowers albedo and increases heat absorption
- identify methane release from thawing ice or permafrost as reinforcing warming
- link warmer oceans or decomposition to extra CO2 and faster warming