Ahighly reactive chemical species with one or more unpaired electrons is

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 is avogadro’s number, and why is it useful

What is the maximum number of electrons that an atomic orbital can contain?