bewellplus.gsu.edu
Stopa645 Stopa645
  • 27-03-2014
  • Biology
Answered

Two characteristics used to define mammals include

Amammary glands and scales.
Bmammary glands and hair or fur.
Cmammary glands and sweat glands.
Dsweat glands and a four-chamber heart.

Verified Answer :

BJthesmartguy
BJthesmartguy BJthesmartguy
  • 27-03-2014
Bmammary glands and hair or fur. things also to classify: feed milk to young, give birth live, and breathe in air, so they have lungs.
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thomastheo98
thomastheo98 thomastheo98
  • 27-03-2014
Bthey fed their child with milk from mammary gland and their body are covered up with hair or fur not feather
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