As Part of a Research Project, a Graduate Student Creates

question 92

Multiple Choice

As part of a research project, a graduate student creates an artificial environment in a sealed container. She sterilizes the soil and adds plants, snails, shrews, and a snake. After adding a small artificial pond, she seals the container. During the first several weeks, the plants are thriving and the animals are doing well. However, piles of dropping are beginning to accumulate, and the entire floor of the container becomes covered with a layer of plant debris several inches thick. One probable cause for the problems is that the graduate student didnʹt

• A) put in enough plants.
• B) add any decomposers.
• C) include any carnivores.
• D) include any autotrophs.
• E) include any herbivores.

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Definitions:

Groin Vault

An architectural feature formed by the intersection at right angles of two barrel vaults, creating a ribbed or groined surface.

Barrel Vault

An architectural element that forms a continuous arch, resembling the shape of a barrel cut in half lengthwise.

Round Arch

A curved architectural element that spans an opening, commonly used in Roman and Romanesque architecture.

Eclecticism

An architectural and artistic approach that combines elements from various historical styles and cultures to create something new and original.