科学家如何从大规模死亡事件锁定嫌疑物种
When more than a million marine animals die, the obvious evidence is scattered across beaches and water. The invisible cause may be much harder to identify.
Investigators compare water samples, tissue chemistry, weather records and the timing of deaths. A toxic alga becomes a strong suspect only when several independent lines of evidence point in the same direction.
Inspired by a public Nature title/summary · Rewritten by Vocabsavvy · Vocabsavvy Original (public-snippet inspired)