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[2016]., Pre-adolescent, Houghton Mifflin Carcourt Call No: 631.5 21 Availability:1 of 1 At Location(s) Summary Note: The world's seeds are in crisis. Of 12,000 plant species used for human food, only about 150 are being grown for sale, only eight grains are traded throughout the world, and half of our calories come from just three: rice, wheat, and maize. This means that our food diversity is diminishing at a shocking rate. More than one in five plants on earth are threatened with extinction. Our lives depend on all kinds of seeds, but they are facing many threats. Seeds can disappear. And once they're gone, they're gone for good.
