Chordate Crossword

in most vertebrates the notochord gets replaced during development by a backbone or
which vertebrates are aquatic as larvae and terrestrial as adults
what does the amphibian skin contain that helps keep the skin moist
snakes produce young by laying eggs and hatching eggs inside their bodies
the only places on Earth that lack reptiles
texture of reptile skin
reptilian eggs are surrounded by a shell and several membranes
circulatory system of reptiles
most lizards and snakes belong to this order
which order of the reptiles is the largest
important to birds that live on or in water
Birds burn many calories to keep warm and this is due to a high
specialized muscular part of the stomach in a bird
lungs of birds are connected to these to do efficient gas exchange
mammals are able to generate substantial body heat internally
This gives mammals their name
mammals have well-developed breathing muscles
humans, cats and whales would belong to this group of mammals
This class has the most highly developed brains
The time the embryo spends inside the uterus