Explain about renewable and non-renewable in detail { 500 words} ??
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Renewable resource: Renewable resources are the natural resources than can be produced again by biological or natural processes. E.g. solar radiation, tide, wind, timber (if used in sustainable way).
Non Renewable resources: These are the resources that cannot be reproduced, grown or generated again by the nature. E.g. coal, petroleum, natural gas, nuclear power etc.
Resources are considered renewable if they can be replenished within a relatively short period of time. Nonrenewable resources must be considered gone forever once used up because they take millions of years to regenerate.
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Renewable resource: Renewable resources are the natural resources than can be produced again by biological or natural processes. E.g. solar radiation, tide, wind, timber (if used in sustainable way).
Non Renewable resources: These are the resources that cannot be reproduced, grown or generated again by the nature. E.g. coal, petroleum, natural gas, nuclear power etc.
Resources are considered renewable if they can be replenished within a relatively short period of time. Nonrenewable resources must be considered gone forever once used up because they take millions of years to regenerate.
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A non-renewable resource (also called a finite resource) is a resource that does not renew itself at a sufficient rate for sustainable economic extraction in meaningful human time-frames. An example is carbon-based, organically-derived fuel. The original organic material, with the aid of heat and pressure, becomes a fuel such as oil or gas. Earthminerals and metal ores, fossil fuels (coal,petroleum, natural gas) and groundwater in certain aquifers are all considered non-renewable resources, though individualelements are almost always conserved.
In contrast, resources such as timber (whenharvested sustainably) and wind (used to power energy conversion systems) are considered renewable resources, largely because their localized replenishment can occur within time frames meaningful to humans.
Earth minerals and metal ores
Main articles: Mineral and Ore
Further information: Mining
Earth minerals and metal ores are examples of non-renewable resources. The metals themselves are present in vast amounts in Earth's crust, and their extraction by humans only occurs where they are concentrated bynatural geological processes (such as heat, pressure, organic activity, weathering and other processes) enough to become economically viable to extract. These processes generally take from tens of thousands to millions of years, through plate tectonics, tectonic subsidence and crustal recycling.
The localized deposits of metal ores near the surface which can be extracted economically by humans are non-renewable in human time-frames. There are certain rare earth mineralsand elements that are more scarce and exhaustible than others. These are in high demand in manufacturing, particularly for theelectronics industry.
Most metal ores are considered vastly greater in supply to fossil fuels, because metal ores are formed by crustal-scale processes which make up a much larger portion of the Earth's near-surface environment, than those that form fossil fuels which are limited to areas where carbon-based life forms flourish, die, and are quickly buried.
Fossil fuels
Main article: Fossil fuel
Further information: Oil depletion
Natural resources such as coal, petroleum(crude oil) and natural gas take thousands of years to form naturally and cannot be replaced as fast as they are being consumed. Eventually it is considered that fossil-based resources will become too costly to harvest and humanity will need to shift its reliance to other sources of energy such as solar or wind power, see renewable energy.
An alternative hypothesis is that carbon based fuel is virtually inexhaustible in human terms, if one includes all sources of carbon-based energy such as methane hydrates on the sea floor, which are vastly greater than all other carbon based fossil fuel resources combined.[1] These sources of carbon are also considered non-renewable, although their rate of formation/replenishment on the sea floor is not known. However their extraction at economically viable costs and rates has yet to be determined.
At present, the main energy source used by humans is non-renewable fossil fuels. Since the dawn of internal combustion enginetechnologies in the 19th century, petroleum and other fossil fuels have remained in continual demand. As a result, conventionalinfrastructure and transport systems, which are fitted to combustion engines, remain prominent throughout the globe. The continual use of fossil fuels at the current rate is believed to increase global warming and cause more severe climate change.[2]
In contrast, resources such as timber (whenharvested sustainably) and wind (used to power energy conversion systems) are considered renewable resources, largely because their localized replenishment can occur within time frames meaningful to humans.
Earth minerals and metal ores
Main articles: Mineral and Ore
Further information: Mining
Earth minerals and metal ores are examples of non-renewable resources. The metals themselves are present in vast amounts in Earth's crust, and their extraction by humans only occurs where they are concentrated bynatural geological processes (such as heat, pressure, organic activity, weathering and other processes) enough to become economically viable to extract. These processes generally take from tens of thousands to millions of years, through plate tectonics, tectonic subsidence and crustal recycling.
The localized deposits of metal ores near the surface which can be extracted economically by humans are non-renewable in human time-frames. There are certain rare earth mineralsand elements that are more scarce and exhaustible than others. These are in high demand in manufacturing, particularly for theelectronics industry.
Most metal ores are considered vastly greater in supply to fossil fuels, because metal ores are formed by crustal-scale processes which make up a much larger portion of the Earth's near-surface environment, than those that form fossil fuels which are limited to areas where carbon-based life forms flourish, die, and are quickly buried.
Fossil fuels
Main article: Fossil fuel
Further information: Oil depletion
Natural resources such as coal, petroleum(crude oil) and natural gas take thousands of years to form naturally and cannot be replaced as fast as they are being consumed. Eventually it is considered that fossil-based resources will become too costly to harvest and humanity will need to shift its reliance to other sources of energy such as solar or wind power, see renewable energy.
An alternative hypothesis is that carbon based fuel is virtually inexhaustible in human terms, if one includes all sources of carbon-based energy such as methane hydrates on the sea floor, which are vastly greater than all other carbon based fossil fuel resources combined.[1] These sources of carbon are also considered non-renewable, although their rate of formation/replenishment on the sea floor is not known. However their extraction at economically viable costs and rates has yet to be determined.
At present, the main energy source used by humans is non-renewable fossil fuels. Since the dawn of internal combustion enginetechnologies in the 19th century, petroleum and other fossil fuels have remained in continual demand. As a result, conventionalinfrastructure and transport systems, which are fitted to combustion engines, remain prominent throughout the globe. The continual use of fossil fuels at the current rate is believed to increase global warming and cause more severe climate change.[2]
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