The ecology of the oceans is all about who eats what, and small changes in the population of certain creatures near the bottom of the web could have large effects on larger ones that eat them.

海洋生态系统其实就是谁吃谁的问题。 食物网底端的微小变化可能将对吃它们的较大生物构成影响。

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Because so little known about the ecology of the species, it will take further study to grasp what the Wolf's living situation is today.

人们对该物种的习性知之甚少，要掌握这种狼在当今的生存状况，还需要进一步的研究。

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To solve this problem, the two questions must be answered: what is the constraint that the nature resources and ecology environment put on the economic activity of human being?

要解决这个问题，两个问题必须得到回答。 自然资源和生态环境到底给人类经济活动施加什么样的约束?。

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The ecology of the oceans is all about who eats what, and small changes in the population of certain creatures near the bottom of the web could have large effects on larger ones that eat them.

ECONOMIST: Ocean acidification

Down in the rock pools, then, the news seems to be mixed: nature is showing a remarkable resilience in the face of man-made interference, but it is still far from clear what the wider impact will be from small changes to local ecology.

BBC: News | UK | West Wales recovering from 'environmental disaster'