Their eyes have vertical pupils, and their scales are keeled.
Early theorists explicitly wanted to capture political attitudes with their scales.
Despite having fins and scales, eels are not kosher, because their scales cannot be removed cleanly.
But the lucky ones mature, spending years –even decades – upstream, until their scales take on a silvery sheen.
Their opponents contend that in some coldblooded reptiles feathers evolved from their scales and were adapted originally for flight.
Caring about students' psychology as well as their scales is not new but has become increasingly important, Ms. Machover said.
Provide each group with a large semicircle cut out of poster board or foam core board to make their scales.
Cones mature in one season and retain their scales when they fall.
The small cones hang from the branch tips and retain their scales when they fall.
Their scales are very small and usually not overlapping (juxtaposed), abutting against one another like paving stones.
Even something as basic as gauging a patient's weight is beyond the abilities of most doctors' offices and hospitals because their scales do not go past 300 pounds.
