Scientists believe that the appendix used to serve a digestive function when humans were forced to eat things that they no longer need to, like tough fibrous plant material or raw meat full of bacteria and parasites. However, the appendix no longer has a specific function and can be removed without consequences for overall digestive functionality. This means that the appendix is what type of structure?

Why is it important to reduce the number of chromosomes in half when forming gametes for sexual reproduction?

What are two ways that harvesting algae from the ocean may benefit human society? how might the harvest of algae negatively impact the ocean communities where that algae grows? how could this be prevented?

How do you think earths interior affects what is happening on the surface? 2. how do fossils support the continental drift hypothesis? 3. how does sea- floor spreading support the hypothesis of continental drift? 4.what do scientists observe when they studied the magnetic fields of rocks on the sides of mid-ocean ridges? 5. what is a tectonic plate ? 6. explain mantle convection 7.how can movements of the continents affect earths climate? 8. what occurs during drifting?