Carlos and his friend decide to take a cab to the mall. the cab ride comes to $12.75.

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.

Calculate the molar mass of aluminum oxide (al2o3). express your answer to four significant figures.

What is the empirical formula for c4h8o2