Land, water and soil are ____________ resources.
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land ,water ,and soil are natural resources
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NATURAL RESOURCES
What are natural resources?• Earth supplies a variety of natural resources that living things use, change, and reuse.• Natural resources may be renewable or nonrenewableWhat are renewable resources?• Resources replaced through natural processes at a rate that is equal to or greater than the rate at which they are being used.• Air, freshwater, soil, living things, and sunlight are renewable resources.Renewable Resources• Air can be cleaned and purified by plants during the process of photosynthesis as they remove carbon dioxide from the air and replace it with oxygen.• Topsoil is formed to replace soil that has been carried away by wind and water (although new soil forms very slowly).• Trees and other new plants grow to replace those that have been cut down or died.• Animals are born to replace animals that have died.• Sunlight, or solar energy, is considered a renewable resource because it will continue to be available for billions of years. It provides a source of energy for all processes on Earth.What are nonrenewable resources?• Resources exhaustible because they are being extracted and used at a much faster rate than the rate at which they were formed.• Fossil fuels (coal, oil, natural gas), diamonds, metals, and other minerals are nonrenewable.• They exist in a fixed amount and can only be replaced by processes that take millions of years.How can natural resources be depleted?• Conservation measures are necessary for nonrenewable resources because they are known to be in a non-replenishing supply. If renewable resources are used at an increasing rate so that they cannot be naturally replaced fast enough, they too can be depleted.• Soil that is lost because it is left bare of vegetation and allowed to erode depletes the land of the fertile topsoil needed for plant growth in that area.• Depletion of freshwater in an area caused by increased demand by the population living there, by wasteful use of the water, or by pollution, can result in water not being available in needed quantities or being unfit for natural use.• Depletion of a living resource, such as trees being removed without being replanted, can contribute to environmental changes in the land, air, and water in that area.How can you conserve?• Reducing involves making a decision to not use a resource when there is an alternative, such as walking or riding a bicycle rather than traveling in a car.• Reusing involves finding a way to use a resource (or product from a resource) again without changing it or reprocessing it, such as washing a drinking glass rather than throwing away plastic or Styrofoam.• Recycling involves reprocessing a resource (or product from a resource) so that the materials can be used again as another item, such as metals, glass or plastics being remade into new metal or glass products or into fibers.• Protecting involves preventing the loss of a resource, usually living things, by managing their environment to increase the chances of survival, such as providing wildlife preserves for endangered animals.
What are natural resources?• Earth supplies a variety of natural resources that living things use, change, and reuse.• Natural resources may be renewable or nonrenewableWhat are renewable resources?• Resources replaced through natural processes at a rate that is equal to or greater than the rate at which they are being used.• Air, freshwater, soil, living things, and sunlight are renewable resources.Renewable Resources• Air can be cleaned and purified by plants during the process of photosynthesis as they remove carbon dioxide from the air and replace it with oxygen.• Topsoil is formed to replace soil that has been carried away by wind and water (although new soil forms very slowly).• Trees and other new plants grow to replace those that have been cut down or died.• Animals are born to replace animals that have died.• Sunlight, or solar energy, is considered a renewable resource because it will continue to be available for billions of years. It provides a source of energy for all processes on Earth.What are nonrenewable resources?• Resources exhaustible because they are being extracted and used at a much faster rate than the rate at which they were formed.• Fossil fuels (coal, oil, natural gas), diamonds, metals, and other minerals are nonrenewable.• They exist in a fixed amount and can only be replaced by processes that take millions of years.How can natural resources be depleted?• Conservation measures are necessary for nonrenewable resources because they are known to be in a non-replenishing supply. If renewable resources are used at an increasing rate so that they cannot be naturally replaced fast enough, they too can be depleted.• Soil that is lost because it is left bare of vegetation and allowed to erode depletes the land of the fertile topsoil needed for plant growth in that area.• Depletion of freshwater in an area caused by increased demand by the population living there, by wasteful use of the water, or by pollution, can result in water not being available in needed quantities or being unfit for natural use.• Depletion of a living resource, such as trees being removed without being replanted, can contribute to environmental changes in the land, air, and water in that area.How can you conserve?• Reducing involves making a decision to not use a resource when there is an alternative, such as walking or riding a bicycle rather than traveling in a car.• Reusing involves finding a way to use a resource (or product from a resource) again without changing it or reprocessing it, such as washing a drinking glass rather than throwing away plastic or Styrofoam.• Recycling involves reprocessing a resource (or product from a resource) so that the materials can be used again as another item, such as metals, glass or plastics being remade into new metal or glass products or into fibers.• Protecting involves preventing the loss of a resource, usually living things, by managing their environment to increase the chances of survival, such as providing wildlife preserves for endangered animals.
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