Match List-I and List-II and select the correct answer using the codes given below : Codes :List I
(Theories/Hypothesis)List II
(Related Aspects)(a) Geosynclinal theory (1) Origin of tides (b) Tetrahedral Hypothesis (2) Origin of coral reef and atolls (c) Stationary wave theory (3) Mountain building (d) Subsidence theory (4) Origin of continents and ocean basins
(3) (4) (1) (2)
Geosynclinal theory (Hall, Dana, later developed by Kober): sediments accumulate in a long, subsiding marine trough and are later compressed and uplifted into fold mountains, so item a matches 3, Mountain building.
Tetrahedral hypothesis (Lowthian Green, 1875): a cooling, contracting earth tends towards the shape of a tetrahedron, with the flat faces forming ocean basins and the corners forming continents, so item b matches 4, Origin of continents and ocean basins.
Stationary wave theory (R. A. Harris): each ocean basin oscillates as a standing wave about a nodal line under the tide-producing force, explaining the pattern of tides, so item c matches 1, Origin of tides.
Subsidence theory (Charles Darwin, 1842): a fringing reef grows upward as a volcanic island slowly sinks, turning into a barrier reef and finally an atoll, so item d matches 2, Origin of coral reef and atolls.
So the matching is a–3, b–4, c–1, d–2; the codes that pair the stationary wave theory with coral reefs or swap the first two pairs do not fit these theories.
Hence, (3) (4) (1) (2).
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.................... is a client server application that identifies each host on the internet with a unique user-friendly name.
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