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90% of the time, speakers of English use just 7,500 words in speech and writing. These words appear in red, and are graded with stars. One-star words are frequent, two-star words are more frequent, and three-star words are the most frequent.
The combination of sedimentology and stratigraphy allows us to build up pictures of the Earth's surface at different times in different places and relate them to each other.
a type of hairstyle which has a long, thin strip of hair growing down the back of the neck
the score in tennis when both players have 40 points
(of a politician) to be able to communicate and connect with ordinary people
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American definition and synonyms of stratigraphy from the online English dictionary from Macmillan Publishers Limited.