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Countries by natural gas proven reserves (2014), based on data from The World Factbook.. Natural gas is a widely available fossil fuel with estimated 850 000 km 3 in recoverable reserves and at least that much more using enhanced methods to release shale gas.
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Energy development is the field of activities focused on obtaining sources of energy from natural resources. [citation needed] These activities include the production of renewable, nuclear, and fossil fuel derived sources of energy, and for the recovery and reuse of energy that would otherwise be wasted.
Energy (from Ancient Greek ἐνέργεια (enérgeia) 'activity') is the quantitative property that is transferred to a body or to a physical system, recognizable in the performance of work and in the form of heat and light.
The carbon cycle of a terrestrial ecosystem. [6] Beginning with photosynthesis, water (blue) and carbon dioxide (white) from the air are taken in with solar energy (yellow), and are converted into plant energy (green).
Latent heat (also known as latent energy or heat of transformation) is energy released or absorbed, by a body or a thermodynamic system, during a constant-temperature process—usually a first-order phase transition, like melting or condensation.
Energy consumption is a key part of most human activities. This consumption involves converting one energy system to another, for example: The conversion of mechanical energy to electrical energy, which can then power computers, light, motors etc.
Thermal radiation in visible light can be seen on this hot metalwork, due to blackbody radiation.. The term "thermal energy" is often used ambiguously in physics and engineering. [1]