Answer:
Sedimentary rocks are normally laid down in order, one on top of another. In a sequence, the oldest is at the bottom, the youngest is at the top. This is the principle of 'superposition'.
Explanation:
B the answer is B I’m pretty sure if not I apologize
All cancer is related to cell cycle.Cancer effects the normal cycle of a cell that cells are no longer able to reproduce and divide in normal way.
Answer:
d is the correct one
Explanation:
The brain and the spinal cord are the central nervous system
The correct answer would be D, gravity. As moving water will cause rocks to erode as well as wind, and animal habitation.