If global warming were to reduce rainfall from 100 cm annually to 20 cm annually

Question 42 of 60   1.667 Points
Nicole is studying a pond weed with a population growth rate of 100 percent per year. It has taken twenty years for the pond weed to cover one half of a lake. How many more years will it take before the pond is completely covered?

 

   A. 15 years.   
 

   B. 10 years.   
 

   C. 5 years.   
 

   D. 1 year.   
 

   E. 20 years.   
Question 43 of 60   1.667 Points
If global warming were to reduce rainfall from 100 cm annually to 20 cm annually in an area of taiga at 30 degrees north latitude, what kind of ecosystem would replace the taiga?

 

   A. Arctic tundra.   
 

   B. Desert.   
 

   C. Savanna   
 

   D. Grassland.   
 

   E. Deciduous forest