If you are looking to combine two or more cells with data in them, check out How to merge cells without losing data. If the Merge and Center button is greyed out, most likely the selected cells are in Edit mode. Press the Enter key to cancel the Edit mode, and then try to merge cells.
Benefits Of Subsistence Farming. Subsistence farming merely means only being able to grow and produce enough food to sustain yourself. There really is no benefit from it other than you secure enough food for your survival. It would be very labor intensive and time consuming and you would probably have little time for other activities.
Intensive subsistence agriculture also utilizes manure as fertilizer and simple irrigation systems. For this type of agriculture, the most common crops are rice and vegetables, which are grown in the same fields using the polyculture method.