An ink cartridge has an ink storage chamber, an ink supply port and a negative pressure generating mechanism which selectively blocks and opens fluid communication between the ink storage chamber and the ink supply port as a consequence of ink consumption. Specifically, the invention relates to the use of RNA interference to inhibit expression of a target essential parasitic nematode gene, which is a parasitic nematode pas-5 gene, and relates to the generation of plants that have increased resistance to parasitic nematodes. A magazine assembly is associated with the housing for positioning and aligning the coated fastener in the path of the driver so that when actuated, the driver strikes the fastener and forcibly ejects it from the magazine into the substrate on which the object to be fastened is to be secured. As viewed from the power grid and its stakeholders’ perspective, enhanced renewable facilities are more stiff than conventional renewable facilities, and produce power that is as commercially valuable and fungible as electric power produced by traditional plants such as fossil fuel power plants, hydroelectric plants, nuclear plants and the like.