Question Sheet: Sea Giants and Island Pygmies

SCIENCE

Before reading:

  1. What are the advantages and disadvantages of an animal being large?
  2. Give an example of how animals adapt to their environments.

During reading:

  1. What is the island rule, and how does it work?
  2. What happens to the typical size of snails in deep versus shallow water?
  3. Describe in your own words two possible explanations of why the island rule

    might be true.

  4. Why does McClain consider the food-based theory unique and useful?
  5. How has McClain's research expanded the ap...

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