A key threat of a warming climate is that it does not pose one single risk, but rather it presents multiple, interacting risks.
In a highly connected world, climate risks – and our responses to them – can be transmitted from one system or sector to another, creating new risks and making existing ones more or less severe.
For example, global warming of 2C is projected to reduce yields of staple crops by 5–20%. Yet greenhouse gas mitigation options can also increase food insecurity if bioenergy crops displace food crops, or can lead to biodiversity loss from land-use change and afforestation.
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