Gasoline /ˈɡæsəliːn/, also known as petrol /ˈpɛtrəl/ outside of North America, is a transparent, petroleum-derived liquid that is used primarily as a fuel in internal combustion engines. It consists mostly of organic compounds obtained by the fractional distillation of petroleum, enhanced with a variety of additives.
On average, a 42-gallon barrel of crude oil yields about 19 gallons of gasoline when processed in an oil refinery, though this can and does vary based on the crude oil source's assay.
The characteristic of a particular gasoline blend to resist igniting too early (which causes knocking and reduces efficiency in reciprocating engines) is measured by its octane rating. Gasoline is produced in several grades of octane rating. Tetraethyllead and other lead compounds are no longer used in most areas to regulate and increase octane-rating, but many other additives are put into gasoline to improve its chemical stability, control corrosiveness and provide fuel system 'cleaning,' and determine performance characteristics under intended use. Sometimes, gasoline also contains ethanol as an alternative fuel, for economic or environmental reasons.
Gasoline is an album by indie rock group The Hard Lessons, released by No Fun Records on May 28, 2005 (see 2005 in music). It was received with generally favorable reviews.
Audioslave is the eponymous debut studio album by the American rock supergroup Audioslave and was released on November 19, 2002 (see 2002 in music). It features the hit singles "Cochise", "Show Me How to Live", "What You Are", "Like a Stone", and "I Am the Highway". The record was certified triple platinum in the US. "Like a Stone" was nominated for the 2004 Grammy Award for Best Hard Rock Performance.
Audioslave was formed after Zack de la Rocha left Rage Against the Machine and the remaining members were searching for another vocalist. Producer and friend Rick Rubin suggested that they contact Chris Cornell. Rubin played the remaining Rage Against the Machine band members the Soundgarden song "Slaves & Bulldozers" to showcase his ability. Cornell was in the writing process of a second solo album, but decided to shelve that and pursue the opportunity to work with Tom Morello, Tim Commerford and Brad Wilk when they approached him. Morello described Cornell: "He stepped to the microphone and sang the song and I couldn't believe it. It didn't just sound good. It sounded transcendent. And... when there is an irreplaceable chemistry from the first moment, you can't deny it." The quartet wrote 21 songs during 19 days of rehearsal and began working in the studio in late May 2001.
A renewable resource is an organic natural resource which can replenish to overcome usage and consumption, either through biological reproduction or other naturally reoccurring processes. Renewable resources are a part of Earth's natural environment and the largest components of its ecosphere. A positive life cycle assessment is a key indicator of a resource's sustainability.
Definitions of renewable resources may also include agricultural production, as in sustainable agriculture and to an extent water resources. In 1962 Paul Alfred Weiss defined Renewable Resources as: "The total range of living organisms providing man with food, fibres, drugs, etc...". Another type of renewable resources is renewable energy resources. Common sources of renewable energy include solar, geothermal and wind power, which are all categorised as renewable resources.
Water can be considered a renewablematerial when carefully controlled usage, treatment, and release are followed. If not, it would become a non-renewable resource at that location. For example, groundwater is usually removed from an aquifer at a rate much greater than its very slow natural recharge, and so groundwater is considered non-renewable. Removal of water from the pore spaces may cause permanent compaction (subsidence) that cannot be renewed. 97.5% of the water on the Earth is salt water, and 3% is fresh water; slightly over two thirds of this is frozen in glaciers and polar ice caps. The remaining unfrozen freshwater is found mainly as groundwater, with only a small fraction (0.008%) present above ground or in the air.