Read the Following Scenario and Answer the Question Below

question 31

Multiple Choice

Read the following scenario and answer the question below.
The western United States contains a series of tall mountain ranges that also extend far down into Mexico. The largest of these ranges are the Rockies and the Sierra Madres, but they are all part of the same mountain -building event that occurred many millions of years ago, and they all have similar features. However, the biodiversity of the southernmost mountains has more connection to that of Central America, while the biodiversity of the Rockies shares more affinity with temperate North American species. Still, much of the forest vegetation on these mountaintops is the same, or very similar, and they are often referred to as the ʺSky Islandsʺ because of their similarity to each other and their isolation from the lower, often drier, areas surrounding them. With global climate change producing increasingly visible effects, conservation biologists fear that these mountaintop ecosystems will undergo major changes in temperature and humidity and that the many endemic species that live there may literally have no place to go.
-If the Sky Islands become warmer and drier, the species that live at lower elevation will _____________.

• A) become extinct
• B) create a helpful buffer zone between themselves and the ʺsky islandʺ species
• C) move into and dominate the altered sky islands
• D) strengthen the biodiversity of the islands by adding many new species
• E) move even farther down the slopes

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Definitions:

Tubules

Small tubes within structures of the body, such as the kidneys or plants, through which fluids or other substances move.

Renal Corpuscles

Specialized structures in the kidneys that play a critical role in filtering blood and forming urine.

Glomerular Filtration

The process by which the kidneys filter blood, removing excess fluids and waste products to form urine.

Tubular Secretion

The third process of urine formation in which substances move out of the blood in the peritubular capillaries into renal tubules.