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Gemstones or Precious and Semi-Precious Stones + (the four gemstones which are most valuable are diamonds, sapphires, rubies, and emeralds; and anyone would be impressed with a gift of a diamond, a sapphire, an emerald, or a ruby piece of jewelry)
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Geography Terms + (geography includes mapmakers, scientists, explorers of the earth and provides a way to look at both the physical world and the people who live in various parts this globe)
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Geology or Related Geological Terms + (a glossary, or dictionary, of terms used in geology; the science of the earth including its origin, composition, structure, and history)
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Graveyard words for a greater understanding of epitaphs (when visiting old graveyards and examining the epitaphs on gravestones, there are certain words and phrases which could be difficult or impossible to understand without knowing what the words in this unit mean)
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Having a Good Vocabulary (understanding how English words are formed and where they come from helps everyone who finds unfamiliar words)
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Health Care Providers, Health-Care Providers, Healthcare Providers (medical professionals and scientists who specialize in designated areas of medical care)
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Hedgerows (fields are protected by barriers of hedges by keeping the wind from eroding (blowing away) valuable top soil)
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Herodotus, The Fifth-Century B.C. Greek Traveler and Historian (Herodotus extended his historical coverage beyond the Greek world to the lives, ways, and beliefs of the people with whom the Greeks and the Persians came into contact)
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Hydrology (the science of water which denotes the study of the properties, distribution, and movements of water on land surfaces, in the soil, and through the subsurface rocks of the earth)
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Hydroponics: Soilless Production of Crops (a description in which plants can be produced in containers filled with water and a number of other non-soil contents)
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Index of Punctuation Marks (Latin punctus "a point" or "a mark"; the standardized non-alphabetical symbols or marks that are used to organize writing into clauses, phrases, and sentences, and in this way to clarify meanings)
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Index of Scientific and Technological Topics (access a variety of topics regarding science and technology)
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Index or Menu of Various Topics (this is an over-all listing of the special groups of topics listed on this site)
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Information from the Past and into the Present, Part 1 (Historical perspectives of the Reader's Digest)
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Information from the Past and into the Present, Part 2 (a few words from the Reader's Digest, March, 1932)
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Information from the Past and into the Present, Part 3 (a few words from the Reader's Digest, July, 1940)
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Information Index, a Compilation of Excerpts and Quotes from Publications Primarily from the Past (a compilation of excerpts and quotes from past issues of magazines and books so they won't be lost in the present)
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Insects, General Applicable Terms (There are estimated to be 10,000 million insects living in each square kilometer of habitable land on earth or 26,000 million per square mile)
