When You Hold Your Breath, Which of the Following Blood

question 25

Multiple Choice

When you hold your breath, which of the following blood gas changes first leads to the urge to breathe?

• A) rising O₂
• B) falling O₂
• C) rising CO₂
• D) falling CO₂

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Definitions:

Mass Depletion

refers to the significant reduction of natural resources or materials on Earth due to human activities or natural processes.

Extinction Rate

The rate at which species and populations of organisms die out over time, often accelerated by human activities and environmental changes.

Environmental Conditions

The various physical and biological factors that influence the life and activities of organisms, including climate, soil, and water.

Speciation

The process by which new distinct species evolve from a single ancestral species.