Study of the origins and distribution of human populations used to be based on archaeological and fossil evidence.

对人类种群起源和分布的研究曾是基于考古和化石证据。

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Heirloom seeds come from plants that were traditionally grown in human populations, as opposed to the seeds used for large-scale agricultural production.

传家宝种子来自传统的人类种植的植物，而不是来自用于大规模农业生产的种子。

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What we see today is the product of evolutionary events, resulting from the dispersal of a few human populations out of Africa around 60,000 to 70,000 years ago.

我们今天看到的是进化事件的产物，是大约6万到7万年前少数人类从非洲迁徙而来的结果。

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She gathered studies that showed the harmful effects of DDT, including declining bird populations and increased human cancers.

VOA: special.2010.03.14

General Assembly and urged the members to intervene in nations unable to protect their populations from human rights violations.

CNN: At synagogue, pope seeks 'bridges of friendship'

Ibana: The adverse effects of climate change on human and non-human populations are irreparable.

UNESCO: World Water Assessment Programme (WWAP)

With human populations mixing more and more freely with wild animal populations, the risk of rabies exposures increases.

FORBES: A Pox On Your House? How Fighting One Disease Brought Back Another