In adults, stem cells remain undifferentiated until they are needed to repair or replace other cells. Stem cells can produce cells that are identical to themselves.
Answer:
the somatic nervous system and the autonomic nervous system
Explanation:
The somatic nervous system is responsible for both sending and receiving sensory and motor information to the central nervous system.
The autonomic nervous system is responsible for regulating involuntary body functions. For example, heart rate, breathing, and digestion.
And red is a color not the word "stop"
