I think its the ribosome and the vacuole, as the two features are found in those 3 types of cells. Let me know if im mistaken!
The part of the stem that gives rise to this pattern is : B. xylem
xylem is responsible in transporting water and nutrients. It die after a year or so and will leave the concentric pattern as it die
hope this helps
Answer:
Normal distribution/Bell-curve
Explanation:
I'm not quite so sure as to the distribution type, but it is definitely a bell curve.
Answer:
C. Stress caused by a collision.........made the rock bend.
