Answer:
media dan teknologi
koreksi saya jika saya salah :]
They are popular because we barely see them. They live in cold places.
~JZ
Hope it helps
Can you insert the diagram in your quiestion. Also hydrosphere is referring to ant sea or body of water. Hydro means water. So anything that contains water is a hydrosphere. Please get back to me when you find the diagram.