Answer:
large number of easily visible phenotypes
Explanation:
Im not entirely sure because cells can be different, a nucleus will probably work in this case and also a cell wall
"D. Core
The core of the Sun is where energy is produced when Hydrogen atoms are converted into molecules of Helium. The extreme pressure and temperature within the core make this conversion possible. This conversion is known as fusion. Within the Sun's core, fusion produces the most appreciable amount of heat energy."
