<Tr> <Td> Vitamin A (IU) </Td> <Td> 214 </Td> <Td> 0 </Td> <Td> 0 </Td> <Td> 9 </Td> <Td> </Td> <Td> 13 </Td> <Td> 180 </Td> <Td> 14187 </Td> <Td> 138 </Td> <Td> 0 </Td> <Td> 1127 </Td> <Td> 5000 </Td> </Tr> <Tr> <Td> Vitamin E, alpha - tocopherol (mg) </Td> <Td> 0.49 </Td> <Td> 0.11 </Td> <Td> 0.59 </Td> <Td> 1.01 </Td> <Td> 0.01 </Td> <Td> 0.19 </Td> <Td> 0 </Td> <Td> 0.26 </Td> <Td> 0.39 </Td> <Td> 0 </Td> <Td> 0.14 </Td> <Td> 15 </Td> </Tr> <Tr> <Td> Vitamin K1 (μg) </Td> <Td> 0.3 </Td> <Td> 0.1 </Td> <Td> 1.9 </Td> <Td> 1.9 </Td> <Td> 1.9 </Td> <Td> 1.9 </Td> <Td> 0 </Td> <Td> 1.8 </Td> <Td> 2.6 </Td> <Td> 0 </Td> <Td> 0.7 </Td> <Td> 120 </Td> </Tr> <Tr> <Td> Beta - carotene (μg) </Td> <Td> 97 </Td> <Td> 0 </Td> <Td> </Td> <Td> 5 </Td> <Td> </Td> <Td> 8 </Td> <Td> 0 </Td> <Td> 8509 </Td> <Td> 83 </Td> <Td> 0 </Td> <Td> 457 </Td> <Td> 10,500 </Td> </Tr>

Why are cereals the major staple food of many of the worlds peoples