No a cell is made of molecules which is made of atoms
The natural selection is selected by natural environment. It is a slow and long process, typically occurs when environment changes a lot. While selective breeding uses human interference and will accelerate this process.
it will store some energy and excrete waste from itself
<u>Answer:</u>
Option (3)
The arms mostly contains old blue and blue-white stars
<u>Explanation:</u>
Spiral arms are the regions in stars extending from the middle of spiral galaxies and the barred spiral. Those long, thin areas look like a spiral and therefore give their name to spiral galaxies.
Spiral arms, though, include many young, blue stars, that render their arms so bright (due to the high mass density and the fast stellar forming rates).
