Although, they may vary in size, style and costs to repair. Servicing your home garage door costs an average of $209 while accessibility, scheduling and working conditions at commercial businesses average $249 and $219 for apartment buildings.
Characteristics of the Five Vertebrate Groups. Fish. The body of the fish is covered in scales and has fins attached to help it move through the water. Fish breathe using gills which take oxygen out of the water.When male and female fish mate, the eggs often meet the sperm in the water.This is called external fertilization. Examples of fish are the herring, which lives in the sea, and the pike which is a freshwater fish.Amphibians. The skin of amphibians is very thin and must always be kept wet because amphibians breathe through their skin.his is called external fertilization. Examples of fish are the herring, which lives in the sea, and the pike which is a freshwater fish. Amphibians. The skin of amphibians is very thin and must always be kept wet because amphibians breathe through their skin.
Three of the vertebrate classes are fish. The most primitive of these is Agnatha . It consists of jawless fish that do not have scales. These are the lampreys and hagfish. Fish that have skeletons consisting of hard rubber-like cartilage rather than bone are members of the class Chondrichthyes .