1. Why do unrelated plants often assume the same growth form in different parts of the world?

2. What information about a biome can you obtain from a climate diagram?

3. Why is the boreal forest biome found on several different continents, including North America, Europe, and Asia?

4. What types of terrestrial plants are found in each of the four biomes situated at temperate latitudes?

5. How do environmental conditions differ among the four temperate biomes?

6. Explain why tropical rainforests experience two peaks of rainfall.

7. Compare and contrast the factors used to categorize terrestrial biomes with those used to categorize aquatic biomes.

8. How do headwater streams and larger rivers differ in their major source of organic material?

9. Compare and contrast swamps, marshes, and bogs.

10. Why does productivity in the ocean differ between the photic and aphotic zones?