Puzzle Solution – Amphibians

 

Amphibian Puzzle Solution
double
adaptation
crossopterygian
aquatic
larva
moist
anura
toad
frog
external
tadpole
urodela
salamander
apoda
caecillian
legless
tropical
mucous
pelvic
pectoral
pulmonary
systemic
cutaneous
duodenum
ileum
mesentery
vent
cloaca
kidney
nictiating
tympanic
amplexus
metamorphosis