Q21. The lowermost and the oldest epoch of the Tertiary Period of geologic time is
Q22. The minor planets revolving between the orbits of Jupiter and Mars are called
Q23. The length of the tropical years (the time interval between successive occurrences of the spring equinox) is decreasing very slowly as a result of
Q25. The highest and lowest values of a weather element observed over the entire period of record are
Q29. The landforms that are created by massive earth movements due to plate tectonics are called
Q30. The largest continent in the world is

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