poikilotherms
cold blooded
testudines
turtles/tortoises
squamata
lizards/snakes
what wavelength for UV light
284-320
convert UV into VitD3- calcium
why do you need UVB
calcium in the body
— is triggered when high Calicium
ultimobranchial gland
makes calcitonin
insectivores should have prey that are —
1/2 the size of the head of the lizard