I believe, (If I can remember Human Geography class), It is mainly farming to produce enough for the farmer's family, very different from just producing food for commercial purposes (A.K.A. Money).
a non-example of subsistence farming is farming companies
The difference is substance farming is for farmers to support there families and raising cash crops are different from substance farming because they raise the plants for money or trading.
Agriculture is taking natural resources from the earth. Some examples are mining, fishing and farming.
farming,mining,lumbering,hunting,fishing are some examples of extractive industry.
Water
nickel,cobalt
Yes. No-till farming and contour farming are two examples of preventing soil erosion.
some examples are lumber jack, mining, farming, fishing
mining and farming mostly substance farming and also there is more
Salt and sugar are examples of substances that readily dissolve in water.
Economics are things that drive a countries economy. Some examples of economics are farming, minerals, livestock, mining, nutrients, military, clothing and computer.
farming,mining,lumbering,hunting,fishing are some examples of extractive industry.