1) Subsistence a) heavy machinery b) technology c) crops grown to eat 2) Commercial a) crops grown to sell b) small scale c) genetic technology 3) Industrial a) slash and burn b) small scale c) genetic technology 4) Small scale slash and burn land clearing a) subsistence b) commercial c) industrial 5) Larger scale slash and burn land clearing  a) subsistence b) commercial c) industrial 6) Very large scale food production a) subsistence b) commercial c) industrial

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