A They joined the U.S Army
Answer:
B The duck billed platypus is a mammal that lay eggs
Explanation:
Because some mammals do fly. Mamals aren't always found in large groups. Mammals are also found in water . So the correct answer is B
<span>The main features of advancing industrialism in the west was the invention of rail roads, telephone, camera, electricity and so on. In short it lead to technological advancement.</span>
