Write the character of mammalia
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samiiii84:
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bio
atom kya h element h ya compound
element
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hmm
your scl name
atom is neither element or compound rather atom is the smallest stable unit of element. Element is the pure form of group of atom when different atom react or join they form compound
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- Fistly they have h dorsal hollow nervous system
- Have mammary gland
- Are viviparous
- Have glands like sebaceous and ceruminous
- 4 chambered heart
- Well developed nervous system
- Homotherms
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