The word agriculture is a late Middle English adaptation of Latin agricultÅ«ra, from ager, field, and cultÅ«ra,  cultivation  or growing. Agriculture usually refers to human activities, although it is also observed in certain species of ant, termite and ambrosia beetle.ntil the Industrial Revolution, the vast majority of the human population labored in agriculture. Pre-industrial agriculture was typically subsistence agriculture / self-sufficiency in which farmers raised most of their crops for their own consumption instead of cash crops for trade.
Part of the Multimedia and graphics glossary: Screen printing, also known as serigraphy, is a method of creating an image on paper, fabric or some other object by pressing ink through a screen with areas blocked off by a stencil.
Relief printing. Relief printing involves creating a print block with areas of the surface in relief, or sticking out. Ink is applied to the print block using a roller, and then the block is pressed against paper.To get an even pressure it is useful to use another clean roller or a printing press.ilkscreen printing uses a screen, stencils and a squeegee. The stencil is placed on the surface with the screen over the top. Ink is placed on the screen and the squeegee is used to pull the ink across the screen forcing it down through the gaps in the stencil.