This figure illustrates 3 hypotheses of how a cancer stem cell may arise: (1) A stem cell undergoes a mutation, (2) A progenitor cell undergoes two or more mutations, or (3) A fully differentiated cell undergoes several mutations that drive it back to a stem-like state.
It will be more similar to her biological parents test scores
Answer:
A. hairs on the back stand up when scared
Explanation:
B and C are not responses to stimuli, and D is a response to internal stimuli
The lungs have no skeletal muscles of their own. The work of breathing is done by the diaphragm, the muscles between the ribs (intercostal muscles), the muscles in the neck, and the abdominal muscles.
D, think of it like a house.
