Answer:
(a)Homo sapiens is the scientific name of busman's.
(b) Humans of class-Mammalia are
(i) It include warm-blood animals
(ii)Their heart is four-chambered
(iii)They possess mammary glands and hairy skin
(iv)They give birth to young ones, only few exceptions are there, e.g.,
Platypus and Ecbidna which lay eggs.
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