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1·The herbicide might damage populations of certain rare plant species that the lake contains.

除草剂可能会破坏湖泊中某些稀有植物的种群。

2·Many areas were richer in animal and plant species than they are now, making them highly favorable for human occupation.

许多地区的动植物种类曾比现在丰富，使得它们非常适合人类居住。

3·A real and pressing issue is that many plant species have not yet been cataloged, and so their place in the ecosystem is unknown.

一个现实而紧迫的问题是，许多植物物种还没有被编目，因此它们在生态系统中的位置是未知的。

4·Certain plant species won't flower if they sense too much light and some plants will only flower if they sense a specific amount of light.

某些植物种类如果感觉到了太多光就不开花，而有些只有感觉到了一定程度的光才会开花。

5·Many savanna and dry-forest plant species are called pyrophytes, meaning they are adapted in various ways to withstand occasional burning.

许多热带稀树草原和干森林植物物种被称为火生植物，这意味着它们以各种方式形成适应性，以抵御偶尔的燃烧。

6·Plant species dependent solely on seeds for survival or dispersal are obviously more vulnerable to any decrease in plant fecundity that occurs.

显然，仅依靠种子生存或传播的植物物种更容易受到植物繁殖力下降的影响。

7·When burning occurs, it prevents competition among plant species from progressing to the point where some species exclude others, reducing the overall diversity of the ecosystem.

当发生燃烧时，它阻止了植物物种之间的竞争发展到某些物种排斥其他物种的程度，减少了生态系统的整体多样性。

8·As a result of these diverse methods by which plants supply resources, unique soil communities form under different plant species and under plant communities that differ in composition.

由于植物提供资源的方法不同，在不同的植物种类和组成不同的植物群落下形成了独特的土壤群落。

9·The question of whether the decrease in plant fecundity caused by the spraying of pesticides actually causes a decline in the overall population of flowering plant species still remains unanswered.

喷洒杀虫剂导致的植物繁殖力下降是否真的会导致开花植物物种总数的下降，这个问题仍然没有答案。

10·If a nonnative plant species invades an above-ground community of flora and fauna, it can alter links between the native above-ground community and the below-ground soil community.

如果一种外来植物入侵了地上的动植物群落，就会改变地上群落和地下土壤群落之间的联系。