Exam 3: Ecosystems: What Are They and How Do They Work

Why is it that most top predators (e.g., lions, tigers, bears, and wolves) have extremely large territories and are relatively rare?

Match the items listed below with the appropriate choice -On the generalized structure of the Earth figure, choose the letter of the layer that contains nonrenewable fossil fuels and minerals.

The amount of energy transferred from an organism on one trophic level to the next trophic level ranges from 1.6% to 56%, but on average is about _____.

Green plants undergo aerobic respiration.

Which statement least characterizes laboratory research?

Match the items listed below with the appropriate choice -On the figure above, choose the letter that represents primary consumers.

Sulfuric acid and sulfates in the atmosphere are a problem when they

Plants utilize a portion of their GPP for respiration.

The organisms that are classified as primary consumers are the

Carpenter ants, bark beetles, and vultures are all examples of

Match the descriptive phrase below with its appropriate cycle. -Cycles are slower than others

The most common gas in the atmosphere is

Which of the following best describes the scientists' initial observations?

Water exists as a liquid over a wide range of temperatures because of the lack of attractive forces between its molecules.

All of the following are consumers except

Match the items listed below with the appropriate choice -On the figure above, choose the letter that represents decomposers.

The aquatic ecosystems that show the highest net primary productivity are ____________________.