You are starting a new item and after reading the first part you realize you have no idea how to go about answering it. What should you do 1) Guess randomly and hope for some useful feedback.
2) Request the solution immediately.
3) Use the available hints.

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.

One nanometer is equal to how many meters?

How is the way a mixture is combined different from how a compound is combined?