Write the cell notation for the voltaic cell that incorporates each of the following redox reactions. (Type your answer using the format [NH4] for NH4 , [Mg]2 for Mg2 , and CO2 for CO2.) (a) Al(s) Cr3 (aq) Al3 (aq) Cr(s) (s) | (aq) || (aq) | (s) (b) Cu2 (aq) SO2(g) 2 H2O(l) Cu(s) SO42-(aq) 4 H (aq) Pt | (g) | (aq), H (aq) || (aq) | (s)

The crust of earth may a- continets and ocean floors. b-continents only. c-layers of sedimentary rocks and continents. d-all of the above

The diagram shows the structures of horse and cat forelimbs. what does the diagram suggest about the evolutionary relationship between these two mammals? a. they have homologous structures, indicating a common ancestor. b. they have analogous structures, indicating a common ancestor. c. they have homologous structures, indicating that they do not have a common ancestor. d. they have analogous structures, indicating that they do not have a common ancestor.

What must happen before a body cell can begin mitotic cell division