Senin, 18 April 2016

Why Don't Fish Have Necks?

Fish have fins and gills, but they don't have necks. That's partly because it would be difficult to swim quickly with a neck that wagged back and forth in the water.

from LiveScience.com http://ift.tt/1VdD5Qc
via IFTTT

0 komentar:

Posting Komentar