Answer:
Well I think your able to identify by looking at the Physical and Chemical Properties or by its Melting or boiling point.
Hopefully this is correct
Answer:
Sertoli cells
Explanation:
The Sertoli cells nourish and protect the developing sperm cells, and spermatogenesis—the developmental pathway from germ cell to mature sperm—occurs in the recesses of the Sertoli cells (Figure 19.17)
It is Gravity.
Hope this helps.
