11.   Both are illiterate rural people without skills apart from subsistence farming.

12.   But subsistence farming on the iodine-deficient soils of inland China and western regions is the core of the problem.

13.   Few peasants would be able to buy enough land to do more than subsistence farming.

14.   His parents emigrated from Spain in an effort to rise above subsistence farming.

15.   His mother lives in a rural area where few blacks have electricity and most survive on subsistence farming and a few cattle.

16.   In the case of subsistence farming, the resultant ash provides rich fertilizer for only two or three years, then the process is repeated.

17.   It creates jobs, jobs that workers are eager to take, jobs that usually pay more than subsistence farming.

18.   Much of the land is still devoted to subsistence farming.

19.   Much of Swaziland, which is smaller than New Jersey, is still devoted to subsistence farming, and poverty is widespread.

20.   The challenge for the developing world is find other things for most of the people to do for a living besides subsistence farming.