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        | the second planet from the Sun, orbiting it every 224.7 Earth days. It has the longest rotation period of any planet in the Solar System and rotates in the opposite direction to most other planets. It does not have any natural satellites |  | 
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        | the act or process of moving through, under, over, or past something on the way from one place to another. |  | 
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        | showing no mercy or pity. |  | 
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        | feeling fear or anxiety; frightened. |  | 
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        | a particular item or object, typically one of a specified type. |  | 
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        | a word or phrase that modifies or qualifies an adjective, verb, or other adverb or a word group, expressing a relation of place, time, circumstance, manner, cause, degree, etc. (e.g., gently, quite, then, there ). |  | 
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        | a word or phrase naming an attribute, added to or grammatically related to a noun to modify or describe it. |  | 
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        | a word used to connect clauses or sentences or to coordinate words in the same clause (e.g., and, but, if ). |  | 
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        | treat or regard as of lesser importance than something else. |  | 
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        | a word governing, and usually preceding, a noun or pronoun and expressing a relation to another word or element in the clause, as in “the man on the platform,” “she arrived after dinner,” “what did you do it for ?”. |  | 
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        | the study of living organisms, divided into many specialized fields that cover their morphology, physiology, anatomy, behavior, origin, and distribution. |  | 
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        | the study of human history and prehistory through the excavation of sites and the analysis of artifacts and other physical remains. |  | 
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        | the application of scientific knowledge for practical purposes, especially in industry. |  | 
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        | the science of the causes and effects of diseases, especially the branch of medicine that deals with the laboratory examination of samples of body tissue for diagnostic or forensic purposes. |  | 
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        | the body of terms used with a particular technical application in a subject of study, theory, profession, etc. |  | 
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        | the scientific study of the behavior, structure, physiology, classification, and distribution of animals. |  | 
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        | holding as much water or moisture as can be absorbed; thoroughly soaked. |  | 
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        | the action of forming or process of being formed. |  | 
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        | a mound or tapering column rising from the floor of a cave, formed of calcium salts deposited by dripping water and often uniting with a stalactite. |  | 
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        | a tapering structure hanging like an icicle from the roof of a cave, formed of calcium salts deposited by dripping water. |  | 
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