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?

Describe the change in phase and temperature as water moves from the oceans to the atmosphere and then returns to earth again as rain. a) evaporation : temperature increases; condensation : temperature decreases; precipitation (rain) : temperature decreases b) evaporation : temperature increases; condensation : temperature decreases; precipitation (rain) : temperature increases c) evaporation : temperature decreases; condensation : temperature decreases; precipitation (rain) : temperature decreases d) evaporation : temperature increases; condensation : temperature increases; precipitation (rain) : temperature decreases