Guys can you help me please it’s due today

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 difference between the atomic number of an element and the element’s atomic mass is the number of ions.

How many grams of aluminum will there be in 98g of al2o3?