measurement
15 crops provide 90% of global calorie intake, and over 4 billion people rely mainly on rice, maize, and wheat.
Authors
Sources
- An ethnobotanical study on wild edible plants in Taishan County ... www.frontiersin.org via serper
15 crops provide 90% of global calorie intake, and over 4 billion people rely mainly on rice, maize, and wheat.