Life
Complex cells may have evolved due to a shortage of trace metals
Trace metals like iron and copper became rare in the oceans around 2 billion years ago, around when complex “eukaryotic” cells first appeared
News
Advertisement
Trace metals like iron and copper became rare in the oceans around 2 billion years ago, around when complex “eukaryotic” cells first appeared
Plant-eating cave bears vanished when ice spread across Europe – maybe because their large sinuses prevented them chewing meat to adapt to the new conditions