Why is the number of electrons or charge of each ion useful information when predicting the products in replacement reactions?

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.

Asap! how do you lengthen a pattern piece? (family and consumer science, sewing)

What is the atomic number of an atom that has 6 protons