What charetieistic is used to classsify a mammal as monotremes marispuial or placental mamel

Monotremes are mammals that lay eggs.

A placental mammal develops inside its mother's body until its body systems

can function on their own.

Explanation:

answer: blah

explanation:

bc blah

brain development. a child's brain undergoes an amazing period of development from birth to three—producing more than a million neural connections each second. the development of the brain is influenced by many factors, including a child's relationships, experiences and environment.

explanation: