在更新世和更早的海洋沉积物中埋藏的化石生物属于孔虫类生物，它们是微小的单细胞海洋生物，其分泌的硬壳由碳酸钙和方解石组成。

The fossils buried in Pleistocene and earlier ocean sediments were of foraminifera—small, single-celled marine organisms that secrete shells of calcium carbonate, or calcite.

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在石膏层上方和下方的沉积物中含有许多小型海洋生物化石，这表明这里的海洋环境很开放。

Sediment above and below the gypsum layer contained tiny marine fossils, indicating open-ocean conditions.

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一些批评人士指出，玉米乙醇的生产所消耗的化石燃料能源比它最终生产的生物燃料能源还要多。

Some critics have suggested that the production of corn ethanol uses up more fossil fuel energy than the biofuel energy it eventually produces.

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