Your brother wants to make a boat out of the tall oak tree in your yard. For every 1000 cm3 piece of wood, your brother measured them to be
about 850g. What is the density of the wood?

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.

Why do scientists look for patterns in the world? a. patterns can explain observations. b. patterns never change, no matter what. c. patterns are easy for scientists to detect. d. patterns are all the same, through all time.

Which atom or ion is the largest? a. k b. k+ c. ca d. ca2+ e. li