"The principle of superposition states that the oldest sedimentary rock units are at the bottom, and the youngest are at the top."
Oldest to youngest: Layer B, Layer C, Layer A
The oldest is always at the bottom, the youngest layer is at the top
Answer: An external factor caused damage to the nerve cells. However, the injection of new cells into the injured area prompted a beneficial change. The injured cells received proteins that decreased inflammation and pain in the mice.
Carbon dioxide, methane, water vapor, and a few other atmospheric gases trap heat energy and maintain earths temperature range
Given what we know, we can confirm that the process of differentiation alters the cells by changing the expression of genes in a cell.
<h3>What is differentiation?</h3>
- differentiation is when a cell becomes specialized.
- This is the case with heart or digestive cells.
- Since all cells carry the same DNA, this does not account for differentiation.
- Instead, this is achieved by changing the expression of genes in a cell.
Therefore, we can confirm that differentiation is what we refer to as a cell becoming specialized in one way or function, such is the case with heart cells or digestive cells, and since all cells in the body carry the same DNA, this is done by changing the way in which the cells express their genes in the DNA.
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