The electromagnetic spectrum includes the complete range of electromagnetic waves placed in order of: a.) increasing amplitude b.) increasing frequency c.) increasing wavelength d.) decreasing frequency?

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.

Compare and contrast physical changes with chemical changes.

Hey guys so i need to know what is _nh3+> nh4oh ~chemistry~