Natural Resources Guided Notes ____________________________________ are anything that occurs naturally in the environment and is used by people. Include _______________________________________________________________ ______________________________________________________________________ ● ____________________________ resources are always available or naturally replaced in a short time. ● Examples: ● _____________________________ resources are not replaced in a useful time frame ● Examples: Humans depend on Earth’s natural resources for survival and for development. Forests ● Because new trees can be planted to replace trees that are cut down, forests can be renewable resources. ● Forests provide many ____________________________ ○ Produce oxygen ○ Remove carbon dioxide and pollutants from the air ○ Prevent flooding and control soil erosion ○ Used in furniture (oak, cherry, and maple wood) ○ Lumber ○ Wood pulp for paper production ○ Fruit, seeds, and other parts for consumable products ● Are maintained using ______________________________________________ processes or by replacing trees as they are used. Land Resources Less than one fourth of the Earth is ______________, ______________________ land. This land must be shared to produce food, build shelter, and obtain resources. ● Agriculture ○ Land provides most of our ____________________ ● Mining ○ Removal of ____________________________________ resources from the land ○ Strip mining removes a strip of land to obtain minerals and is then replaced ● Development ○ People settle in areas that have good soil near _____________________ Water Covers nearly ____________ of the Earth, but it is considered a __________________ resource ● 97% of available water is __________________________ ● 75% of the available freshwater is __________________________ ● _______________________________ stored in the soil and rock beneath the surface is usable However, water is also a ______________________________ resource ● The water cycle moves water between the atmosphere and the earth ● Unfortunately, there is not always enough of it at one time, which can lead to a _________________________________________ Ocean Resources ● Harvesting of fish ○ Fisheries: Areas with large populations of valuable organisms ○ If fish are caught faster than they reproduce, populations decrease ○ Management by setting fishing limits, changing fishing practices, finding new resources, and developing aquaculture (raising fish) ● Algae ● Sediments ● Potential chemicals for medicine ● Water (through desalination) ● Fuels ­ oil, natural gas, and methane ● Minerals ● Upwelling process moves cold water up with minerals, nutrients, and organisms from deeper waters Fossil Fuels _____________________________________ substances formed from dead organisms ● Remains were buried under sediments ● Exposed to extreme heat and pressure Include __________________, ________________, and ________________________ When burned, atoms react and release energy as heat and light Considered ____________________________ sources of energy because they take hundreds of millions of years to form Renewable Sources of Energy ● Solar ­ energy from the sun ● Hydroelectric ­ produced from flowing water ● Wind energy ­ captured from a wind turbine ● Nuclear power ­ energy is released from splitting atoms ● Biomass fuels ­ fuels from living things (leaves, food waste, etc) ● Geothermal energy ­ using the intense heat from magma close to the surface