Chapter Eight

Yes! I totally agree with what Neil Shubin said “More essentially, smells can help us to survive. The smell of tasty food gets us hungry; the smell of sewage makes us feel ill”(140). One of my friends was sick, and she lost the sense of smell. I remembered every time she had to depend on us to describe those things that we smell. So it was really danger for her because she can not smell the smoke.

In the last two chapters, the author had mentioned about that the ancestors of all organisms had similar biological characters. So I made a hypothesis which is that all the organisms might have the same ancestors. It was based on their embryos, unicellular organisms, and multicellular organisms. In chapter six, the author described that embryos were look very similar; however, they came out differently. In chapter seven, multicellular organisms had come from unicellular organisms were mentioned. In this chapter, he mentioned that nasal openings and the flow of odor molecules from jawless fish to man. Also he mentioned “as in fish, amphibians, reptiles, mammals, and birds, much of our sense of smell is housed inside our skull” (142). So this also had proven my hypothesis discussed in last two comments that all of the organisms might have the same ancestors. I wander whether this hypothesis will make me win a Nobel Prize or not.