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【導(dǎo)讀】VersionCopyright©TheEarth’sAtmosphere. outes. VersionCopyright©AQAandits. FoundationTier(C1Jun12,2.). VersionCopyright©AQAandits. VersionCopyright©AQAandits. VersionCopyright©AQAandits. VersionCopyright©AQAandits. (a)A-core. B-mantle. C-crust. 1. 1. 1. (b)Any2from:. oceans. carbondioxide. Marineanismsuse(dissolved)carbon. Or. ofmarineanisms. formoffossilfuels. 2. Total5. HigherTier(C1Jun12,4.). VersionCopyright©AQAandits. VersionCopyright©AQAandits. VersionCopyright©AQAandits. thesequestions. VersionCopyright©AQAandits. Markscheme-Higher. VersionCopyright©AQAandits. (a)Any2from:. oceans. Marineanismsuse(dissolved). skeletons. Or. /usecarbondioxide. Or. formoffossilfuels. 2. andnitrogen. Ignoreoxygen. 1. Markscheme-Higher. VersionCopyright©AQAandits. Any2from. earlyatmosphere. (continuous)lightning. beenintheEarth'searly. atmosphere. earlyatmosphere. presentatmosphere
【正文】 n Ignore oxygen 1 Mark scheme Higher Version Copyright 169。 AQA and its licensors. All rights reserved. Q Answer Extra Information Mark (b)(ii) Any 2 from ?Nobody knows what was in the Earth39。s early atmosphere ?There may not have been ( continuous) lightning ?Miller and Urey selected only the gases needed to produce amino acids Ignore small scale / timescale Ignore references to water / oceans or other theories Accept these gases / hydrogen / methane/ ammonia may not have been in the Earth39。s early atmosphere Accept carbon dioxide / nitrogen may have been in the Earth39。s early atmosphere Accept reference to Venus’ present atmosphere 2 Total 5
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