Life Science 7 Chapter 13 Crossword

Animals that cannot control their body temperatures internally are?
What organ do young amphibians have that the adults usually do not have?
The walls of a vertebrate heart chamber are made of?
Snakes are....
Mammals and birds are....
The state of inactivity that amphibians may enter during hot, dry weather is called...
A supporting structure that is similar to but more flexible than bone is....
The structures that manufacture urine as they filter blood....
the organ many fish use to help them float at a constant depth is the....
Digests and absorbs food....
Absorbs excess water and eliminates wastes....
Turtles that spend their entire lives on land are called....
The muscle helps mammals and humans breathe is the....
Carnivore is to meat as herbivore is to....
Which animal has two sets of teeth, the maxillary and vomerine?
Which animal has a two-chambered heart?
Which animal has heat-sensing pits?
"double life"
moves by flexing its entire body
Brain and spinal cord