What is the mode of life/existence for each: amphibia, reptilia, birds, mammalian
Amphibia: These are the animals that live on land but return to water for breeding. They are terrestrial vertebrates that perform reproductive activities in water.
Reptilia: These are the creeping vertebrates that live on land and posess thick,dry, cornified skin without glands.
Birds: birds are bipedal tetrapods whose body is covered with feathers and whose forelimbs are modified into wings. They are cosmopolitan in their mode of life found on land, in water ,in air .
Mammals: These are the animals whose females possess functional mammary glands and suckle their young ones. They are found on land (terrestrial) , in water (aquatic) , on trees (arboreal) , underground (fussorial) and some can fly.
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