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Who proposed that many plants and animals have become extinct through time and that fossils differ through time?
Q2: By _ years ago, much of Greenland,
Q4: Sandstone-carbonate-shale assemblages occur along continental rift margins
Q14: Before the appearance of cells capable of
Q18: Interest in continental drift waned until studies
Q20: Earth's core is likely to be _.<br>A)composed
Q20: Erosion of the Taconic Highlands resulted in
Q22: _ gold deposits are formed by stream
Q30: Ocean energy is difficult to harness because
Q32: Background extinction refers to _.<br>A)the continual extinction
Q57: The angle of the subducted slab during