What Is the Single Greatest Threat to Biodiversity

question 54

Multiple Choice

What is the single greatest threat to biodiversity?

• A) overharvesting of commercially important species
• B) introduced species that compete with native species
• C) pollution of Earth's air, water, and soil
• D) disruption of trophic relationships as more and more prey species become extinct
• E) habitat alteration, fragmentation, and destruction

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Definitions:

Hypothalamus

A region of the brain responsible for the regulation of certain metabolic processes and other activities of the autonomic nervous system, including temperature control, hunger, and thirst.

Midbrain Injury

Damage to the midbrain, a part of the brainstem involved in functions such as vision, hearing, motor control, sleep/wake, arousal, and temperature regulation.

Vital Sign

A measurable bodily function that is an indicator of physiological status, including temperature, pulse, respiration, and blood pressure.

Critically Ill

A state of health in which patients are suffering from severe and life-threatening health conditions, requiring complex and urgent medical care.