A stable and mature ecological community that represents the final stage of succession in a particular environment is referred to as a:  

What is a significant consequence of habitat fragmentation on the populations of organisms living within the affected area?  

Which of the following chemical reactions is the correct one that leads to the formation of acid rain from sulfur oxides? 

The primary mandate of the Clean Air Act of 1970 was to require:  

All of the following are characteristics of high-density animal farming (aka CAFO’s) EXCEPT…

What occurs during El Niño?

Which of the following is an example of a natural disruption that can significantly alter an ecosystem?  

Which of the following is associated with a transform boundary?

A company is importing rare tropical hardwood to manufacture furniture, which did they violate? 

 The net primary productivity (NPP) of an ecosystem is 25 kg C/m2/year, and the energy needed by the producers for their own respiration is 30 kg C/m2/year. The gross primary productivity (GPP) of such an ecosystem would be…  (kilograms of carbon serves as a proxy for kcal in this case) 5 kg C/m2/year. c)  25 kg C/m2/year.. 10 kg C/m2/year. d)  55 kg C/m2/year.