From Fish to Terrestrial VertebratesChanges in climate during the Devonian may have had something to do with this if freshwater areas became progressively more restricted
From Fish to Terrestrial Vertebrates One of the most significant evolutionary events that occurred on Earth was the transition of water-dwelling fish to terrestrial tetrapods (four-limbed organisms with backbones). Fish probably originated in the oceans, and our first records of them are in marine...
Channing 本题出自TPO44 Passage 1 From Fish to Terrestrial Vertebrates 原句案例 Gills were undoubtedly the main source of oxygen for these fish, but the lungs served as an auxiliary breathing device for gulping air when the water became oxygen depleted, such as during extended periods of drought...
鱼可能起源于海洋,我们最早的证据是在海洋的岩石里。但在Devonian时期,鱼开始基本都呈现水生形式包括淡水,其中一种化石特别普遍在淡水岩石里是lobe-finned fish。选项A中lobe-finned fish显然不是最早的鱼类;选项B与原文中鱼类出现的顺序阐述一致;选项C中的lobe-finned fish只是其中的一种;选项D中的lobe-finned fish...
One of the most significant evolutionary events that occurred on Earth was the transition of water-dwelling fish to terrestrial tetrapods (four-limbed organisms with backbones). Fish probably originated in the oceans, and our first records of them are in marine rocks. However, by the Devonian ...
From Fish to Terrestrial Vertebrates One of the most significant evolutionary events that occurred on Earth was the transition of water-dwelling fish to terrestrial tetrapods (four-limbed organisms with backbones). Fish probably originated in the oceans, and our first records of them are in marin...
From Fish to Terrestrial Vertebrates One of the most significant evolutionary events that occurred on Earth was the transition of water-dwelling fish to terrestrial tetrapods (four-limbed organisms with backbones). Fish probably originated in the oceans, and our first records of them are in marine...
Fish began living in freshwater habitats only after originating elsewhere. Lobe-finned fish radiated into almost all available aquatic habitats. During the Devonian, lobe-finned fish were more common in marine than in freshwater habitats. 你的答案: 正确答案:B 题目解析: 登录 后才能查看题目解析,还没...
此外,植物已经出现在溪流和池塘附近的陆地栖息地,螃蟹和其他节肢动物也是这个最早的陆地群落的成员。因此,到了泥盆纪,淡水边缘的陆地栖息地可能是丰富的蛋白质来源,可以被容易爬出水的动物利用。来自牙齿的证据表明,这些最早的四足动物没有利用陆地植物作为食物;它们可能是肉食性的,没有发展出以植物为食的能力。第一批...
所属专辑:硬啃之托福阅读 音频列表 1 TPO 43-3 El Niño 224 2018-04 2 TPO 44-1 From Fish to Terrestrial Vertebrates 296 2019-02 3 TPO 44-2 The Use Of Camera Obscura 194 2019-02 4 TPO 44-3 Seagrasses 268 2019-02 5 TPO 45-1 the Beringia Landscape ...