Exam 5: Environmental Systems and Ecosystem Ecology

Use the accompanying figure to answer the following question. -Overall,it appears that terrestrial biomes with more available fresh water ______________ .

The three largest pools of the carbon cycle,in order,are _____________.

Use the accompanying figure to answer the following question. -This graph helps to explain ______________ .

Biodiversity is partially influenced by net primary productivity (NPP).Where can the highest terrestrial rates of NPP be found?

In an aquatic ecosystem experiencing eutrophication,levels of dissolved macronutrients and dissolved oxygen levels _____________.

Which of the following is the best example of an ecosystem service?

Use the accompanying figure to answer the following question. -Recall that areas with high net primary productivity not only produce high levels of biomass rapidly,they also take up large amounts of CO2 and give off large amounts of oxygen.What is the likely result of the increasing amounts of fertilizers in the major rivers emptying into oceans?

Human activity has affected every aspect of the nitrogen cycle.List the ways that humans have altered nitrogen content starting with how nitrogen becomes available to producers,where it goes,and what impacts it has.What are the ecological concerns regarding the dramatic changes people have made in the global nitrogen cycle?

A system stabilized by negative feedback,with opposing processes offsetting each other,is said to be in ______________ .

Negative feedback processes tend to function within ecosystems to _____________.

All of the following are fluxes in the hydrologic cycle EXCEPT _____________.

-Which location on the map has the highest net primary productivity?

All of the following are considered Earth's structural spheres EXCEPT ______________

The majority of Earth's fresh water exists ______________

What factors contribute to the "dead zone" in Chesapeake Bay?

You are studying with a classmate,who explains that increasing the amount of nutrients in a lake helps submerged,rooted aquatic plants by providing them with the nitrogen and phosphorus they need to survive and reproduce.Which of the following should be your response to your study buddy?

The first essential step in changing atmospheric nitrogen into more usable NH₃ is called ______________