Exam 24: Ecology and the Nature of Ecosystems

There are no reservoirs of carbon for the carbon cycle.

The global climate has already warmed about 0.6 degrees Celsius since the Industrial Revolution.

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

Diagram an ecological pyramid that consists of four trophic levels. Indicate the category of organisms at each level and provide an example of an organism for each category.

Cultural eutrophication can be caused by

All of the energy in an ecosystem eventually becomes

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

Which is at the beginning of a grazing food web?

What is the loss of water from plants called?

Which of the following is associated with groundwater mining?

How is carbon dioxide made availabe to living organisms?

What kind of an organism is an earthworm?

One of the consequences of building roads, parking lots, and buildings is

Decomposers perform a valuable service because they recycle nutrients.

Timothy has become a vegan. He does not eat any meat, eggs, milk, or cheese. How would Timothy be classified?

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

What does the word "trophic" mean?

How is the nitrogen cycle like the carbon cycle?

When energy flows from one trophic level to another, only a small amount is actually used. Which of the following uses of energy by an organism allows for the least amount of transfer to a different trophic level?

What is another name for autotrophs?