D1. What are ecosystem goods and services? People depend on nature for their daily needs and well-being. The natural ecosystem provides us with a variety of goods and services, for example fresh water, fishing, timber, water purification, etc. The benefits that people derive directly from natural systems are called ecosystem services (ES). The natural ecosystem provides both goods and services. and services for us. Ecosystem goods are the things people produce from soil, water and plants; Crops, fibers, wood, livestock, tourism, etc. are examples of ecosystem goods. And, at the same time, people benefit from a variety of fundamental and life-sustaining services such as flood control, clean air and water, pollination of crops and other plants, natural hazard regulation, cultural, spiritual and aesthetic services called ES (Kerr, G., 2010).Classification of ecosystem servicesThe United Nations conducted an in-depth study of the current status and trends of ecosystem services with the help of 1,300 experts from around the world and prepared the Millennium Ecosystem Assessment (MEA) report in 2005. This report classifies ecosystem services into four types. 1) Supporting Services: This is a fundamental unit of ecosystem services that support other ecosystem services. Soil formation, photosynthesis, nutrient cycling, and water cycling constitute the supporting services of ES. 2) Provisioning services: these include goods or products obtained from the ecosystem such as food (crops, livestock, fisheries, aquaculture and wild foods), fibers (timber, cotton, silk , firewood, genetic, biochemical, natural resources .... middle of document ...... then the decision The decision maker must know the consequences of his decision in ES, for example how the supply of wood, dam construction and extensive land use for agriculture affect the decision If decision makers' action can change the ES, they should consider trade-offs among many options when making the decision and should choose the ones. policies that help promote and maintain ES (Ranganathan, J. et al., 2008). Conclusion The benefits we derive from nature are ES and they are essential to our development and overall prosperity. Works cited Ranganathan. , J. et al. (2008). Ecosystem Services a Guide for Decision Makers Institute. Kerr, G. (2010). Services approach to informing environmental management, draft. Royal Roads University, Victoria, British Columbia.