トカゲ
For some lizards it is easy being green. It is in their blood. Six species of lizards in
New Guinea bleed lime green thanks to evolution gone weird. It is unusual, but there
さらに、そのうえ
are creatures that bleed different colors of the rainbow besides red. The New Guinea
以外にも
appears green
lizards' blood-along with their tongues, muscles, and bones
胆 色素
5
because of incredibly large doses of a green bile* pigment*.
-
The bile levels are
[(1) [-]
higher than those at which other animals, including people, could survive.
2
Scientists still do not know why this happened but evolution is providing some 2