(Figure 21

question 15

Essay

(Figure 21.7) The figure shows results of nitrogen addition in eight sites around the United States. What do these results tell us about limiting resources at the sites? What did researchers conclude about declines in species richness?

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Definitions:

Thoracic Cavity

A large body cavity in humans and many animals that houses the lungs and heart, among other organs, located between the neck and the abdomen.

Sternum

A long, flat bone located in the central part of the chest, connecting the rib bones and supporting the collar bone.

Anatomy Programs

Educational courses or software that teach the structure of living organisms, particularly the human body.

Laboratory Settings

Environments specifically designed for scientific experimentation, research, and testing, equipped with specialized equipment and materials.