Describe tectonic plates and explain how they “float” on the Earth’s surface (what do they float on and what causes their movement).

What protects the lining of the stomach from acidic gastric juices?

What environmental cues and landmarks do the geese use to determine the timing and direction of their migration over the mountains? how do they find their way?

Which best example best demonstrates the importance of having knowledge of evolutionary relationships? a. illustration of a plant b.organ transplantation between species c. blood donation from a human d. do you need sequence of an insect.