What is an AUV? What's a 'big obstacle' of using robots in the deep ocean?

What do scientists use instead of 'radio waves' to keep in touch' with AUVs?

The images show the wings of a bat and a bee. from this evidence, what can you conclude about the evolutionary relationship between these organisms? a. the wing structures of the bat and the bee are different, indicating they didn’t inherit wings from a common ancestor. b. the wing structures of the bat and the bee are different, indicating they inherited wings from a common ancestor. c. the functions of bat wings and bee wings are the same, indicating they obtained wings from a common ancestor. d. the functions of bat wings and bee wings are different, indicating they didn’t obtain wings from a common ancestor.

For this question look at the hydropic diagram water that is heated by the sun evaporates. select the number that represents it.

Which of these definitions have been paired with the correct type of cell?