Exam 19: Ecosystem Essentials

Using outside sources, provide an example of each of the following symbiotic relationships: mutualism, parasitism, commensalism, and amensalism.

In which of the following terrestrial ecosystems would one tend to find the lowest net primary productivity?

Organisms that share the same feeding level (e.g. primary producers, primary consumers, secondary consumers, etc.) are said to be at the same

Some harmful chemicals that are long-lived, stable, and soluble in fatty tissues become increasingly concentrated at each higher trophic level.

Plants remove a relatively insignificant amount of carbon dioxide from the atmosphere.

The study of the interrelationships between organisms and their environment is called

Of the total energy intercepted at the Earth's surface and available for work, about 25% is fixed by photosynthesis as carbohydrates in plants.

Human caused eutrophication is known as