Tutor profile: Hayley B.

What happens when a piece of continent reaches an ocean-bound subduction zone? A. An island chain is formed B. Subduction ceases C. Subduction switches to the other plate D. The continent is subducted

C. Subduction switches to the other plate Explanation: Continental crust is lighter than oceanic crust. At a subduction zone, the oceanic crust usually sinks into the mantle beneath the lighter continental crust.

Studies of plant cells show that lipid saturation changes seasonally with temperature. Which of the following would be true based on this observation? A. Lipid saturation is higher in the winter B. Lipid unsaturation is higher in the winter C. Lipid unsaturation is higher in the summer D. There will be no change in lipid saturation

B. Lipid unsaturation is higher in the winter Explanation: Fluidity has a directly proportional relationship with temperature. Therefore, as temperature decreases, fluidity also decreases. In this example, lower temperatures cause the lipid to become unsaturated.

Is the following sentence correct? After reading the book, the movie made more sense. A. The sentence has a dangling modifier. B. The sentence has a comma splice. C. The sentence is correct.

A. The sentence has a dangling modifier. Explanation: A dangling modifier is present because it is uncertain who read the book. The correct form of the sentence would be, "After reading the book, I thought the movie made more sense".