| 1. | It is all still there, like petroleum under the covering layers of rock.
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| 2. | Initially, the caps are covered by a peridium an outer covering layer of tissue.
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| 3. | Wounds in the mutated mice form a covering layer of skin faster, she said.
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| 4. | Eventually erosion removes the covering layer.
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| 5. | However, they fall short of being ovules, since the nucellus, an inner spore-covering layer, does not completely enclose the spore.
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| 6. | In some specimens, four layers of collagen are visible, the fibres of the covering layers crossing those of the collagen below.
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| 7. | Eventually, the heat from the deep subsurface together with the insulating qualities of the covering layer produced a thick water layer.
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| 8. | It is not possible for ordinary horses to go all over the universe and then enter into its outer covering layers.
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| 9. | Notable revisions to the 2012 edition include a new chapter on Grooved Metal Gaskets with Covering Layers and updates to material tables ."
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| 10. | Submerged arc welding ( SAW ) is a high-productivity welding method in which the arc is struck beneath a covering layer of flux.
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