Which One of the Following Statements About the Human Impact

question 27

Multiple Choice

Which one of the following statements about the human impact on Earth's ecology is CORRECT?

• A)Agriculture has increased abundance and distribution of some species, while decreasing abundance and distribution of other species.
• B)Humans commandeer as much as 25 percent of all photosynthetic production on land.
• C)More atmospheric nitrogen is converted to ammonia by humans than by the rest of nature.
• D)Human activities produce more carbon dioxide than do volcanoes.
• E)All of these statements about the human impact on Earth's ecology are correct.

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Definitions:

Glottis

The part of the larynx consisting of the vocal cords and the slit-like opening between them.

Diaphragm

A dome-shaped, flexible muscle separating the chest cavity from the abdominal cavity in humans, playing a major role in breathing.

Spasm

An involuntary sudden movement or convulsive muscular contraction.

Small Cell Carcinomas

Small cell carcinomas are a type of highly malignant cancer that most commonly arises in the lung, characterized by small cells that can multiply quickly.