#Question id: 9171
#Unit 9. Diversity of Life Forms
Suppose that the number of bird species is determined mainly by the number of vertical strata found in the environment. If so, in which of the following biomes would you find the greatest number of bird species?
#Question id: 9169
#Unit 9. Diversity of Life Forms
In areas of permafrost, stands of black spruce are frequently observed in the landscape, while other tree species are noticeably absent. Often these stands are referred to as "drunken forests" because many of the black spruce often "lean over" (that is, they are displaced from their normal vertical alignment). What is the most likely explanation for the unusual growth of these forests in this marginal habitat?
#Question id: 9164
#Unit 9. Diversity of Life Forms
Use the following figures to answer the question below.
East of the Mississippi River, in Hopkinsville Kentucky, the mean annual precipitation is 130 cm. The mean annual temperature is 14.3°C. In the winter, the mean temperature is 7.3°C, while in summer it is 20.6°C. Using the climograph shown here, how would we classify the biome found in Hopkinsville?
#Question id: 9163
#Unit 9. Diversity of Life Forms
Use the following figures to answer the question below
Based on the data in the figures, which of the following statements are correct?
I) Area 1 would be considered a desert because of its high average temperature.
II) Area 1 has more average precipitation than Area 2.
III) Area 2 would be considered a desert because of its low average precipitation.
IV) Area 2 has a larger annual temperature variation.
#Question id: 9159
#Unit 9. Diversity of Life Forms
Which of the following investigations would shed the most light on the future distribution of organisms in temperate regions that are faced with climate change?
#Question id: 9157
#Unit 9. Diversity of Life Forms
At 15-30°N, air masses formed over the Pacific Ocean are moved by prevailing westerlies, where they encounter extensive north-south mountain ranges. Which statement best describes the outcome of this encounter between a landform and an air mass?