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PRESENTATION 
AMPHIBIANS
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PRESENTATION

AMPHIBIANS

Introduction:

Amphibians a unique class of vertebrates that can leave in the water or on land. They were the first vertebrates to colonize the terretrial environment.

  • Life Cycle: The metamorphosis transform amphibians from aquatic youngs (larva form), to terrestrial adults (air-breathing form with lungs), with various transformation steps.
  • Physiology: Amphibians have permeable skin and diverse diets.
Biology of Amphibians:

Categories

1) Newts and Salamanders2) Caecilians3) Frogs and Toads

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Salamanders

Newts

Salamanders are a diverse group of amphibians that belong to the order Urodela. They are often characterized by their lizard-like appearance and long, slender bodies. Salamanders can't be found in Antarctica.

Newts are small, semi-aquatic amphibians that belong to the family Salamandridae. They are found primarily in North America, Europe and Asia. Newts can be divided into various categories based on their species, characteristics, and life history.

Caecilians

Caecilians are a fascinating group of amphibians that live hidden in the ground. They belong to the order Gymnophiona and are characterized by their long, limbless, serpentine bodies.

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Toad

Frogs

Toads are a group of amphibians characterized by dry and warty skin. There are many different species of toads found around the world, and they can be divided into various categories based on their characteristics, geographic distribution and other factors.

Frogs are amphibious creatures belonging to the order Anura, which means "without tail" in Greek. They are distinct from their parets toads, primarily by their smooth and moist skin, webbed feet, and the fact that they tend to be more aquatic.

Conclusion:

Amphibians are ecologically important but vulnerable creatures. Conservation actions are vital to protect them by safeguarding of ecosystems and biodiversity.

Percentual of known amphibians

Still existing amphibians

Extint aphibians

37%

63%

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