Answer:
100% sure it's tissue tropism.
Explanation:
Hey Rosalyn!
A nucleus in a cell, holds DNA and DNA is essential. If there is no nucleus, there is no cell. If you need further clarification, comment on my answer :)
Answer: C. Shadow length decreased from sunrise to noon.
Explanation: Think about how the sun is positioned in the sky. If it was noon, the sun is above the stick which means little to no shadow at all. If the sun was rising, its hitting one side of the stick, making the shadow longer.