The global food system has a profound impact on the environment. The production of much more food than is consumed only aggravates the pressure on the environment. Under this pressure, more than 20% of the world's arable land, 30% of its forests and 10% of its grasslands are being degraded. 9% of freshwater resources are consumed, 70% of which are used for agricultural irrigation; Changes in agriculture and land use, such as deforestation, account for more than 30% of greenhouse gas emissions; Overfishing and poor management have led to a decline in fish populations, with about 30 percent of Marine fish stocks being overexploited.