Which of the prosthetic groups listed can accept or donate either one or two electrons because of the stability of the semiquinone state

Subduction zones occur on earth where dense oceanic crust dives under more buoyant continental crust. these boundaries are characterized by a deep ocean trench next to a high continental mountain range, large numbers of earthquakes and volcanoes. all of this is further evidence for the a) big bang theory b) origin of the species eliminate c theory of plate tectonics d theory of natural selection 4 sedimentary rocks found high in the himalayen mountain

When you mate two plants together the terms is called? answer it fast as possible plz! i have a test tomorrow!

What methods could you use to solubilize calcium carbonate