The muskrat is found in wetlands over a wide range of climates and habitats. It has important effects on the ecology of wetlands and is a resource of food and fur for humans.The muskrat is the largest species in the subfamily Arvicolinae, which includes 142 other species of rodents, mostly voles and lemmings.Muskrats are referred to as  rats  in a general sense because they are medium-sized rodents with an adaptable lifestyle and an omnivorous diet.he muskrat is found in wetlands over a wide range of climates and habitats. It has important effects on the ecology of wetlands and is a resource of food and fur for humans. The muskrat is the largest species in the subfamily Arvicolinae, which includes 142 other species of rodents, mostly voles and lemmings.
1 KRS College of Management Studies, Nasik. 2  An economic model is a mathematical or logical statement of economic theory. 3  It is a method of analysis which presents an over-simplication of the real world. 4  Economic Models can set up with diagrams, words, equation form, etc.
Economics is a social science concerned with the factors that determine the production, distribution, and consumption of goods and services. The term economics comes from the Ancient Greek Î¿á¼°ÎºÎ¿Î½Î¿Î¼Î¯Î± from Î¿á¼¶ÎºÎ¿Ï (oikos, house) and Î½ÏÎ¼Î¿Ï (nomos, custom or law), hence rules of the house (hold for good management).