Answer:
option d is the correct option. all the cell in the embroyo would be capable of attaching to one another regardless of the cell type.
Explanation:
cadherins are molecules that allow cell adhesions. various number of cell bind together using this molecules for
proper functioning.
I think the answer is DTell me if I’m wrong
Older layers are toward the bottom.and younger layers toward the top.
I don’t know if this is right but I think it’s D.
sorry if it’s wrong;(.
I don't really get your question but i would have to guess that the temperature would have been colder since the sun wouldn't have been created yet (if your talking about before everything)
correct me if im wrong :P