I am not certain but I believe uv, use sunlight to power the wrist watch
Answer:
This is because they transitioned from water where they need them and then became mosses which dont have roots but rather hold in water but as they evolved plants got roots so they can dig deep into the group to reach water resivoirs.
That is exactly what binary fission means
Valve created by soft palate keeps food out of nasal airway during swallowing
It is a wels catfish also called sheatfish it also looks like a catfish
