A Factor That Helps Prevent the Widespread Use of Hydrogen

question 17

Multiple Choice

A factor that helps prevent the widespread use of hydrogen as a fuel is

• A) the need to first separate hydrogen from one of its chemical compounds, such as water.
• B) the greenhouse gas produced when it combines with oxygen.
• C) the small amount of energy liberated when it combines with oxygen.
• D) its inability to be used in fuel cells.

Analyze the physiological adaptations in animals to various environments for efficient gas exchange.

Understand the concept and implications of diffusion in gas exchange, as outlined by Fick's law.

Assess the physiological responses to variations in oxygen and carbon dioxide levels in the blood.

Describe the structural adaptations in respiratory systems that maximize gas exchange efficiency.

---

Definitions:

Alpha Rhythm

A pattern of regular pulses, between 8 and 12 per second, visible in the EEG of a person who is relaxed but awake and typically has her eyes closed.

Beta Rhythm

The rhythmic pattern in the brain’s electrical activity often observed when a person is actively thinking about some specific topic.

Consciousness

The quality or state of being aware of an external object or something within oneself, regarded as a defining aspect of the human experience.

EEG

A test that detects electrical activity in the brain using small, flat metal discs attached to the scalp.