So his advice for other archaeologists who want to track animal and human populations? Look out for number one.

那他对其他想追踪动物和人类种群的考古学家有何建议？留意尿液。

So his advice for other archaeologists who want to track animal and human populations?

那么他对其他想要追踪动物和人类种群的考古学家的建议是什么？

A wide range of smartphone apps could allow citizens to do everything from monitoring air and water quality to tracking ocean plankton populations from space.

智能手机应用程序的广泛使用使得公民们可以进行监控空气水源质量及追踪海洋浮游生物数量。