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Centuries: 1st century BC - 1st century - 2nd century

Decades: 20s BC 10s BC 0s BC 0s 10s - 20s - 30s 40s 50s 60s 70s

Years: 15 16 17 18 19 - 20 - 21 22 23 24 25




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... is a form of precipitation, as is snow, sleet, hail, dew or fog. Rain forms when separate drops of water fall to the Earth's surface from clouds. Not all ...