What is the lengthening of a muscle without damage? And what is the shortening of a muscle?

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.

How many moles of carbon dioxide will form if 2.5 moles of c3h8 is burned

What are the coefficients to balance the following equation? ba+br=babr2