what are amniotes? write the characters of mamalia and its sub classes
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what are amniotes? write the characters of mamalia and its sub classes
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The organisms those possess an extra layer called amniotic layer around the embryo are called amniotes.
Mammals are those who gives direct birth to their offsprings and self feed them.
1.They posses external hair
2.External ears
3.Mammary glands.