Agriculture – the cultivation of plants and livestock – was a key part in the transition from hunting and gathering to sedentism that occurred at the end of the last Ice Age. The domestication of wild plants started in Western Asia around 12,000 to 11,000 years ago, while domesticated animals appeared around 10,000 years ago.

Elsewhere in the world, agriculture developed independently but followed relatively quickly. Farming started in Central and South America around 9,000 to 8,000 years ago, and around the same period in China. Today, about 2 billion people worldwide depend on subsistence or smallholder agriculture.

Soil is being lost more than 100 times more quickly than it is being formed in plowed areas, and lost 10 to 20 times faster even on fields that are not tilled.

Agroecosystems comprise between 30 and 40 percent of the Earth’s land surface and are defined as ecosystems created by humans based on their choices, such as producing crops to feed themselves or livestock. But due to the climate crisis, there are increasing concerns over the future of land productivity and the world’s ability to feed itself.

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