Question

How ia global warming largest threat to humanity

Answer 1

Global warming is the rise of the average temperature of the Earth’s climate system. It is extremely likely that human influence has been the dominant cause of the observed warming since the mid of last century. The largest human influence has been emission of greenhouse gases such as carbon dioxide, methane and nitrous oxide. Climate model projections indicate that during the 21st century the global surface temperatures is likely to rise a further 1,7 ºC for their lowest emissions scenario and up to 4,8ºC for the highest emissions scenario. The scientific community anticipates dramatic consequences, with impacts differing from region to region but to include:

More frequent and severe weather (, storms, heat waves, wild fires, droughts, heavy rainfall, floods, heavy snowfall)

Higher death rates (especially children, the eldery and low income communities)

Dirtier air

Rising of sea level

Changing precipitation

Expansion of deserts in the subtropics

Retreat of glaciers, permafrost and sea ice

Ocean acidification

Higher wildlife extinction rates