(a) The Panama Canal(b) The Mediterranean Sea(c) The Indian Ocean(d) The Suez Canal

(a) Chlorine material precipitated from sea water(b) Tiny colonial marine animals which construct limestone skeleton material(c) Silt and sand deposited by rivers(d) Volcanic rocks

(a) White Sea(b) Sea of Okhotsk(c) Panama Canal(d) Gulf of Alaska

(a) North America(b) Europe(c) Russia(d) Africa

(a) Breccia(b) Limestone(c) Mudstone(d) Basalts

(a) Anthracite(b) Bituminous(c) Peat(d) Lignite

(a) High-grade Coal(b) Bituminous Coal(c) Peat(d) Lignite

(a) Anthracite(b) Bituminous(c) Peat(d) Basalts

(a) Basalt(b) Hypabyssal(c) Laccolith(d) Batholith

(a) Old Sedimentary(b) Old Igneous(c) Old Metamorphic(d) Both (b) and (c)

(a) Breakdown of sediments(b) Accumulation of organic matter from flora and fauna(c) Extreme heat and pressure(d) Cooling and solidification of molten rock

(a) Sandstone(b) Marble(c) Metamorphic(d) Shale

(a) Accumulation of sediments at the bottom of the sea(b) Granitisation(c) Both (a) and (b)(d) Altering of metamorphic rocks

(a) Limestone(b) Sandstone(c) Shale(d) All of the above