Farmers clear land by cutting trees and burning them. Then they use the ash as fertilizer for their crops. After course of several years, the soils nutrition is depleted and they move on the next site. Meanwhile, the farmland is used for grazing pasture for cows. That's why beef is so cheap at fast food restaurants. This is what is happening at the Amazon rain forest. Water irrigation from rivers wash a lot of the fertilizers used by farmers and creates a pollution known as Eutrophication. The fertilizer is washed into our drinking water supply as well as into some lakes/streams creating an algae bloom. Then the algae is eaten by bacteria and small creatures creating a lack of oxygen in water and killing off many species that breath underwater. High transportation costs are driving three main shifts in supply chain strategies. These changes are having a beneficial impact not just on transportation budgets but also on broader supply chain and financial performance.International trade growth places pressure not just on U.S. gateway ports but also on inland transportation systems and service availability. Simply put, more goods entering through the ports means more domestic moves to deliver these goods to their destinations. Moreover, as ships increase in size, demand for inland transportation services also grows. making our food supply safer for consumers and the environment and less expensive to produce. Adding a new gene to a crop plant may benefit growers and consumers. This technique is being used to produce crops that are less vulnerable to insects, diseases and weeds. In the future, scientists hope to develop crops that can be used to create new materials or energy sources, provide more nutrients, treat diseases or serve as vaccines to prevent diseases.