Clorophyll is green.

Why do animals not exhibit distinctive characteristics that denote their origin?

"...an anyon is a type of quasiparticle that occurs only in two-dimensional systems, with properties much less restricted than fermions and bosons..." Makes sense to me.

"What do Alaska, Connecticut, Florida, Idaho, Maryland, Nebraska, Oklahoma, Texas, and West Virginia borders have in common?" Don't thump at the door and run away.