The species composition of ticks varied with different months.

不同月份的蜱种组成有所不同。

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The species composition and characteristics of mangrove flora in the world were reviewed and discussed.

探讨了世界红树林植物区系的种类组成及其特点。

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The species composition, structure, physiognomy and succession of mangrove community near Aotou port, Daya are disscussed in this paper.

本文报道了大亚湾澳头港附近的红树植物群落的种类组成、结构、外貌及演替。

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The report also says that the composition of the world's forests is likely to change because some tree species will not be able to move northwards (or to higher altitudes) to escape the encroaching warmth.

BBC: Climate change warning