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AMPHIBIANS.
From Wikipedia, the free encyclopaedia
Amphibians (class Amphibia), such as frogs, toads, salamanders, newts, and caecilians, are cold-blooded animals that metamorphose from a juvenile, water-breathing form to an adult, air-breathing form. Typically, amphibians have four limbs. Unlike other land animals (amniotes), amphibians lay eggs in water, as their fish ancestors did. Amphibians are superficially similar to reptiles.
Amphibians are ecological indicators, and in recent decades there has been a dramatic decline in amphibian populations around the globe. Many species are now threatened or extinct. Scientists do not agree on the cause, but it is widely believed to be a direct result of the amount of water pollution emitted from industrial factories and other similar sources.
From Wikipedia, the free encyclopaedia
Amphibians (class Amphibia), such as frogs, toads, salamanders, newts, and caecilians, are cold-blooded animals that metamorphose from a juvenile, water-breathing form to an adult, air-breathing form. Typically, amphibians have four limbs. Unlike other land animals (amniotes), amphibians lay eggs in water, as their fish ancestors did. Amphibians are superficially similar to reptiles.
Amphibians are ecological indicators, and in recent decades there has been a dramatic decline in amphibian populations around the globe. Many species are now threatened or extinct. Scientists do not agree on the cause, but it is widely believed to be a direct result of the amount of water pollution emitted from industrial factories and other similar sources.