Which of the three graphs shown in Figure 17-5 might show a population of birds with members that specialize in different types of food? Explain.

Explain how paleontologists use trilobite fossils as index fossils for various geologic time periods.

The scales shown in the introduction measure mass, or the amount of matter in a particular object. the scientific law of conservation of mass states that matter cannot be created or destroyed during a chemical reaction, but it can change from one form to another. did the simulation support this scientific law? explain why or why not.

Which is an example of a vestigial structure? a: paw of a lionb: wing of a birdc: appendix of a humand: tail of a cat(i think it's a but i'm not sure)