1.

Birds and mammals share one of the following characteristics as a common feature. (a) Pigmented skin (b) Pneumatic bones (c) Viviparity (d) Warm blooded body

Answer»

Birds and mammals share one of the following characteristics as a common feature.

(a) Pigmented skin

(b) Pneumatic bones

(c) Viviparity

(d) Warm blooded body



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