Pollution (CO2, CH4, water vapour) can increase the concentration of greenhouse gases in the atmosphere and the infra red will increasing be re-emitted back into the surface instead of being reflected off. The consequences of this is that the average global temperature will increase = GLOBAL WARMING.
Consequences can include ice caps melting resulting in higher sea levels, which will change the ocean current, alter the wind direction, possibly more extreme weather and contribute to Climate Change. Which can change the world distribution of biomes.
polar ice caps melting