If you were seeking to locate areas of desert-like conditions to study the evolu

If you were seeking to locate areas of desert-like conditions to study the evolution of plant drought-resistance, where would you be most likely to encounter suitable sites?
   A. Areas of air flow off the sea.    
   B. 60 degrees north and south latitude.    
   C. Leeward side of mountain ranges.    
   D. Areas of solar warming near the equator.    
   E. Windward side of mountain ranges.

What is a major factor aggravating pollution levels in “brown air cities”?
   A. Sulfur oxides.    
   B. Particulates.    
   C. Scrubbers.    
   D. Sunlight.    
   E. Smog.

Assume you are a biologist that is studying the effect of a new food additive on the digestive system. Since other species can be used to some degree to understand human body systems, you are looking for a test group. Based on the following phylogeny, which group would you expect the anatomy to be most similar to humans and therefore choose as your test group?

   A. Amphibians    
   B. Sharks    
   C. Mammals    
   D. Ray finned fish    
   E. None of the above