And these rhythms are at the very root of human activities.

这些节奏是非常根本的人类活动。

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The rapid growth of its population, industry and commerce remain at the root of pollution by human activities.

人口激增，工商业蓬勃发展，这些人类活动正是污染的根源。

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The root cause of the destruction of ecological environment by commercial activities is the lack of self-discipline of the dealers and the innate market defects.

商业活动破坏生态环境的根本原因是交易双方的主观不自律和市场机制固有的弊端。

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In an area of a few tens of square kilometres around this tower, the researchers will place further sensors in the soil and in local streams, to measure temperature, carbon-dioxide and nutrient levels, along with rates of root growth and the activities of microbes.

ECONOMIST: A 30-year plan to study America��s ecology is about to begin