What might be an example of coevolution? 

A)  plants and herbivores 
B)  plants and water 
C)  plants and wind 
D)  plants and soil nutrients

____________________,large grazers,were nearly eliminated from North America's long-grass prairie.

Which of the following activities is NOT used to monitor volcanoes?

A) measuring seismic activity with seismic instruments
B) measuring sulfur dioxide gas emissions
C) measuring changes in heat flow from satellites
D) measuring tilting on the flanks of a volcano
E) all of these are used to monitor volcanoes

Generalist species tend to have a broad niche while specialist species have a ____________________ niche.

How many large convention cells (Hadley cells) distribute heat and moisture around the surface of the Earth? 

A)  2 
B)  4 
C)  6 
D)  8

What types of surfaces appear dark on a radar image taken by a satellite?

A) a surface that is rough
B) a surface that slopes toward the satellite
C) a surface that is smooth or slopes away from the satellite
D) a surface that contains quartz and feldspar

Which age structure would be associated with a country that has a rapidly growing population? 

A)  a structure that forms an inverted pyramid 
B)  a structure that has a large prereproductive population 
C)  a structure that shows little variation in population by age 
D)  a structure that has a broad-based pyramid

Which type of satellite is used in remote sensing? 

A)  GPX 
B)  ECOsat 
C)  Stratus 
D)  Landsat

about 36% of sludge,also known as ____________________,is used to fertilize farmland,forests,and golf courses.