Which of the following is a metamorphic rock formed from shale?
a. limestone
b. gneiss
c. slate
d. sandstone

Compare and contrast cladistics and phylogeny. what are their advantages and disadvantages? which is the most useful in understanding how an organism developed into its current form? which concept most strongly supports your opinion about the origin of any given organism?

When analyzing tree rings, what do scientists assume a thin ring indicates?

Describe how a student should adjust the microscope to see the cells on a slide more clearly?