Unmanned aerial vehicles (UAV), colloquially known as drones, are reinventing old businesses and even creating brand new opportunities.＿＿（36）＿＿, businesses have used drones largely in video and photography, especially for marketing purposes, but there are many other applications of UAV technology that might surprise you. For example, farmers can benefit from drones in several ways. In fact, many in the UAV industry cite agriculture as an enormous area of opportunity for drone technology.＿＿（37）＿＿ can drones save farmers money by helping them identify failing plants early and ＿＿（38）＿＿ inventory of crops, but the machines can also be used to map and study the farmland and its irrigation systems. In each of these cases, utilizing drones helps ＿＿（39）＿＿. In addition, drones can be equipped to spray pesticides, fertilizers or water on crops. Each UAV is like a far cheaper mini-crop duster. Moreover, for farms ＿＿（40）＿＿ livestock, drones can also be used to monitor the animals and quickly gather and track useful data about animal health and population.