If gross primary productivity (GPP) in a wetland is 3 kg C/m2/year and respiration (r) is 1.5 kg C/m2/year, what is the net primary productivity (NPP) of this wetland?

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

What is a subduction zone? 

In the context of ecosystems, the term “resistance” refers to:  

Sea turtles lay hundreds of eggs with the hope that a few of their offspring will survive to adulthood. This is an example of which type of survivorship curve? Explain why.

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

Which best explains the impact of the sun on wind circulation patterns?  

ENSO (El Niño Southern Oscillation) weather patterns are characterized by variations in air pressure and temperature. Which type of ENSO pattern contains both low air surface pressure and a cooling phase? 

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

Which diagram shows a steadily growing graph?