Answers

2016-03-05T07:16:05+05:30
Aves: this are warm blooded animal and have a four chambered heart.they lay eggs.there is an outside covering of feathers,and two forelimbs and modified for flight.they breathe through lungs.all birds fall in this category.
amphibia: these animals differ from fish in type lack of scales,in having mucus glands in the skin,and a three chambered heart.respiration is through either gills or lungs.they lay eggs.these animals are found both in water and on land.frogs,toads and salamanders are some example.
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2016-03-05T15:27:55+05:30
Aves- They are warm blooded animals and four chambered heart . They lay eggs. There wings are covered with feathers. Reptile. - they are cold blooded , have scales and breathe through lungs.
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