Exam 24: Ecology and the Nature of Ecosystems

Which is the following functions of an herbivore provides energy that becomes available to the carnivore that eats the herbivore?

The bottom of the ocean floor is not considered part of the biosphere because no sunlight reaches it.

Which is at the beginning of a grazing food web?

There is more nitrogen gas in the atmosphere than there is oxygen.

What is the name of the frigid ecosystem bordering the North Pole?

Minerals in rocks are considered what type of component of a chemical cycle?

Biological magnification occurs as organisms get larger due to increased water,air,and soil pollution.

Which of the following is not an effect of global warming?

Cultural eutrophication can be caused by

What does the word "trophic" mean?

What do autotrophs require in order to produce food for themselves and all the heterotrophs?

Decomposers perform a valuable service because they recycle nutrients.

Are humans capable of upsetting global biogeochemical cycles with their activities?

Phosphorus is needed by living organisms because it is a part of proteins.

What kind of an organism is an earthworm?

Assuming all of the following organisms are part of the same food web,which of the following would be an example of a secondary consumer?

How does phosphate enter the soil?

Which of the following defines an ecosystem?

Which is an exchange pool for the carbon cycle?

A biogeochemical cycle involves only the abiotic components of an ecosystem,and describes how chemicals circulate through those components.