As Sandy falls, she screams. If Sandy's scream is one, continuous tone, to whom would the pitch of her scream sound the highest? A. to a person skydiving to the side of Sandy B. to a person skydiving just below Sandy C. to a person directly below Sandy on the ground D. to a person in an airplane directly above Sandy​

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.

The name of the ion, s2-, is: sulfurous ion sulfide ion sulfur ion sulfate ion

Calculate the number of moles of ethane in 100 grams