A) They possess hair on the body
B) Some of them lay eggs
C) Their heart is three chambered
D) Some are aquatic
Correct Answer: C
Solution :
All Mammals are:| Vertebrates (Have a backbone or spine). |
| Endothermic also known as "Warm blooded". Endothermic animals regulate their own body temperature which allows them to live in almost every climate on earth. They have hair on their body, produce milk to feed their babies, their heart is four chambered, some of them are aquatic and some lay eggs. |
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