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Coal gap - Wikipedia


The Permian–Triassic (P–Tr) extinction event, colloquially known as the Great Dying, the End Permian or the Great Permian Extinction, occurred about 252 Ma ( million years) ago, forming t...

Which best explains how coal deposits formed - Answers.com


Coal is a fossil fuel that formed through the transformation of organic plant matter. It is primarily used as a heat source to generate electricity.

Which best explains how natural gas deposits formed - Answers.com


Pressure from sediment turned decaying plankton at the bottom of the ocean into natural gas. .... Natural gas is formed in the same method that coal and oil are formed. Plant matter decays in an area where oxygen cannot reach it. This causes ...

June - New York State Regents Earth Science

www.regentsearth.com/Regents Archive/ES June 98 (ProMod) w-key.pdf

Jun 18, 1998 ... Which statement best explains the apparent sinking of this sailboat? ... 2 breccia, fossil limestone, bituminous coal, and siltstone ... 1 formed by igneous intrusion. 2 faulted during ..... 2 sand and gravel deposits. 3 iron and zinc ...

Spring 2007 Earth Science - Virginia Department of Education


Read each question carefully and choose the best answer. Then mark the space on ... G Formation of soil from parent material. H Deposition of ... these best explains these observations? F. Organisms ... B mineral deposits .... H Coal. J. Zinc. 41 Students plan to use several rain gauges to compare average monthly rainfall.

How Coal Works | Union of Concerned Scientists


Coal is formed by ancient plants and animals accumulating in moist peat bogs. As plants die off in ... This process happens best in river deltas or coastal plains. ... Low-sulfur coal deposits were developed primarily under fresh-water conditions.

Middle School Round 12 Page 1 ROUND 12 TOSS-UP 1 ...


2) EARTH SCIENCE Multiple Choice Which of the following best explains the ... coasts that formed as a consequence of continental rifting: ... W) coal. X) granite. Y) slate. Z) peridotite. ANSWER: Z) PERIDOTITE ... Y) significant ashfall deposits.

A high-latitude Gondwanan lagerstätte: The Permian permineralised ...


Jan 24, 2014 ... The structure of Gondwanan coal is relatively well understood in terms of ... means of evaluating the original composition of the coal-forming biota and the ... plant remains known from two main deposits in the central Transantarctic Mountains. ...... We consider that this hypothesis best explains the differential ...

Where does coal come from? | MNN - Mother Nature Network


Aug 4, 2009 ... The basic recipe for any good fossil fuel is simple: Mix peat with ... Coal formation begins when lots of plants die in dense, stagnant ... For that transformation to happen, sediment must eventually cover the peat, Hackley explains, ... "Across the U.S., a lot of coal deposits are not Carboniferous," Ruppert s...

Is coal still being formed today? › Ask an Expert (ABC Science)


Feb 18, 2013 ... ... wood substance lignin did not exist in the Carboniferous period and explains the existence of coal? ... The process of coal formation is still taking place today, says Bailey. .... Good discussion with: Is coal still forming today?

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How are coal deposits formed - Answers.com


Millions of years of pressure and heat turned decaying animals and plants into coal. .... Which best explains how coal deposits formed? Coal is a fossil fuel that ...

Which best explains the two categories of form and content


Content is what is said and form is the way it is said. .... Which best explains how natural gas deposits formed? Pressure from sediment ... coal deposits formed? Coal is a fossil fuel that formed through the transformation of organic plant matter.



These types of plants had evolved by the Devonian Period and coal deposits are found in ... It appears that many coal deposits formed when peat deposits in ..... Evans and Phylis Geller which explains the process of mountain-top removal.