Faculty of translation theoretical phonetics

Fish. Fish

Fish is considered to be the first vertebrates (vertebrates). Initially, they did not have jaws, but their descendants were thousands of new species to the jaw, such as cartilage (cartilaginous), ray-finned (ray-fined) and lopasteperye (lobe-finned) fish.
Key characteristics of fish:

1. 
   Vertebrates — vertebrates.
   
2. 
   First animals to evolve jaws — the first animals that developed jaws.
   

3. 
   I breathe using gills — breathe using gills with.
   
4. 
   No limbs — no limbs.
   
5. 
   Ectothermic — cold-blooded.
   

Amphibians. Amphibians

Amphibians — the first vertebrates that moved from water to land. They are descended from lopasteperyh fishes about 370 million years ago. These include tailed amphibians (salamanders), toads and frogs (toads and frogs), as well as Caecilians (caecilians). There are more than 5,000 species of amphibians. Today, they are becoming smaller due to the threat from the outside — climate change, the destruction of their habitat, the presence of toxic substances in the water.
Key characteristics of amphibians:

1. 
   Vertebrates — vertebrates.
   
2. 
   Tetrapods — four-legged.
   
3. 
   Ectothermic — cold-blooded.
   
4. 
   First vertebrates to colonize terrestrial habitats — the first vertebrates that are living on the earth’s surface.
   

Reptiles. Reptiles

Reptiles — cold-blooded vertebrates that evolved from amphibians 340 million years ago. Even then, reptiles amphibians different from two features: scales (scale) and the ability to lay eggs (to lay eggs). Today there are more than 8000 reptiles (reptiles).
Reptiles include:

• 
  Turtles — Turtle.
  
• 
  Squamates — scaly.
  
• 
  Crocodiles — crocodiles.
  
• 
  Tuatara — tuatara, a reptile rhynchocephalia.
  

Key characteristics of reptiles:

1. 
   Vertebrates — vertebrates.
   
2. 
   Tetrapods — four-legged.
   
3. 
   Ectothermic — cold-blooded.
   
4. 
   Scales and scutes — scales and shells.
   
5. 
   It lays eggs — lay eggs.