2.Coal is formed from the remains of freshwater plants.
煤是由淡植物遗骸形成。
3.The one sawfish species that did not receive the highest level of protection is a freshwater sawfish found in Australia.
目前唯一一未被列为高度保护钜鲛,为发现于澳洲淡锯鲛。
4.Freshwater and suitable concentration of formalin, copper sulfate and sodium salinomycin were the better way to prevent and cure Cryptocaryoniosis.
在药物防治刺激隐核虫研究中发现淡和合适浓度福尔马林、硫酸铜和盐是比较好防治办法。
5.Benthos The organisms that live on the bottom sediments of freshwater and marine ecosystems. They include plants and algae (phytobenthos) that grow below low tide mark.
底栖物(海底物):在淡或海洋态系统底部活物体。包括一些底植物和藻类。
6.The Curronian Bay including the lower Nemunas, is the richest freshwater source of fish in Lithuania, where fish production (pikeperch, smelt, roach) is 1,300 tonnes a year.