Question: Q: Shedding of dead cells ensures constant renewal of what outer layer of the skin? Choices: - scale - cuticle - dermis - epidermis A:
Answer: epidermis

Question: Q: What simple machine consists of a bar that rotates around a fixed point called the fulcrum? Choices: - battering ram - rotor - catapult - lever A:
Answer: lever

Question: Q: Where do the majority of species live? Choices: - air - trees - land - ocean A:
Answer:
ocean