Although Hydroelectric Dams Generate Electricity Without Producing Greenhouse Gases,they __________________

question 18

Multiple Choice

Although hydroelectric dams generate electricity without producing greenhouse gases,they __________________

• A)contribute only about 5% of the electrical power throughout the world
• B)still produce more greenhouse gases per unit of electricity produced than coal power plants
• C)can harm aquatic organisms downstream by affecting water temperature
• D)cannot provide a consistent supply of electricity during times of naturally low river flow
• E)are short -lived structures that have to be rebuilt about every 20 years

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Definitions:

Motor Neuron

Neuron that innervates skeletal, smooth, or cardiac muscle fibers.

Vagus Nerve

The tenth cranial nerve, which innervates the heart, lungs, and digestive tract, thereby playing a significant role in controlling heart rate, gastrointestinal motility, and respiratory rate.

Parasympathetic Impulses

Nerve signals transmitted through the parasympathetic branch of the autonomic nervous system, generally working to conserve energy and restore the body to a state of calm.

Thoracic

Pertaining to the chest region, encompassing the area between the neck and abdomen and containing organs such as the heart and lungs.