The highlighted nerve plays what role in the parasympathetic nervous system?

What feature of cell theory is best demonstrated in the image

Which medullary index indicates a human hair? a. 0.653 b. 0.733 c. 0.516 d. 0.256

There are specialized producers that live in warm water vents deep in the ocean. these producers do not per-form from photosynthesis, but instead perform a similar process with iron and other chemicals. why do you think these producers use this process instead of photosynthesis?