Definitions for "Amphibians"
A group of vertebrates including frogs, salamanders and caecilians. Amphibians usually have aquatic larvae and terrestrial adults.
are animals which live on land and in water, but need to return to water to reproduce. For example frogs, toads and newts all spend the first part of their lives as tadpoles in water, but when they grow into adults, they develop legs and lungs which enable them to live on land. The Arctic Circle is a very cold area of land around the North Pole and includes Alaska, Greenland, parts of Canada and Russia. The Arctic Circle has very short summers where the sun shines day and night, and very long, dark winters when it is dark for many months. For more information about land in the Arctic Circle, find Habitat Fact Sheet Number 1. Blowhole is the hole on top of a whale’s head. Their nostrils are positioned beneath a valve which stops water coming in when the whale dives under water.
A class of animals with backbones (vertebrates) that includes frogs, salamanders and caecilians. Amphibians have moist skin and do not have scales, feathers, or hair. Amphibians can live in water or on land. Most lay eggs in water and their larvae go through a complex metamorphosis process as they grow to adulthood and move to land. It is thought that amphibians were the first animals to venture out from the water and adapt to life on land.
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