I go with Ice Core examples since early sociteties probably didn't have Written Records or maps, and tree rings would only tell if they were fossilized. I hope this helped :)
Cell differentitation is important because our body's need different type of cells to grow and also function
I think it’s B but i’m not sure i’m sorry if i’m wrong
Answer:
Trace minerals are those minerals which we need in lesser amount for our body which includes iron, copper, zinc, cobalt, selenium etc.
hope it helps!