Answer:
Rock weeds are the weeds which are grown in the surface of the rock which has a lot of moisture in around it and also may be affected by a lot.
Explanation:
Cell differentiation is how generic embryonic cells become specialized cells. This occurs through a process called gene expression. ... During cell differentiation, the cell size and shape changes dramatically, as does its ability to respond to signaling molecules
<h2>Explaining what is atomic number since there's no choices.</h2>
<h3>The atomic number or proton number of a chemical element is the number of protons found in the nucleus of every atom of that element.The atomic number uniquely identifies a chemical element.It is identical to the charge number of the nucleus.</h3>