Therefore, soil and water conservation measures on water resources and water environment impact study have been imperative.

因此，进行水土保持措施对水资源与水环境的影响研究已经势在必行。

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Others study the impact of human activity on Earth's environment and design methods to protect the planet.

另一些地球学家则研究人类活动对地球环境的影响，并制订出保护地球的措施。

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LONDON (AFP) — The tiny South Pacific Ocean archipelago of Vanuatu is the happiest country on Earth, according to a study published measuring people’s wellbeing and their impact on the environment.

{1}伦敦(法新社)消息：一项新的衡量人们生活及其对环境影响的研究指出，位于南太平洋的小岛国瓦努阿图是地球上最幸福的国度。

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Mr Dodson also accuses the agency of not carrying out an environment impact study before going ahead with the work to encourage otters on the river Cegin.

BBC: Environment Agency sued over carp-eating otters