How Can Humans Interfere with the Phosphorus Cycle

question 49

Multiple Choice

How can humans interfere with the phosphorus cycle?

• A)by burning natural gas.
• B)by mining for fertilizers.
• C)emissions from automobile exhaust.
• D)increasing global warming.

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Definitions:

Panic Disorder

A psychiatric disorder characterized by recurrent unexpected panic attacks and persistent concern about having more attacks.

Somatoform Disorder

A mental disorder characterized by physical symptoms that have no identifiable physical cause, often thought to be linked to psychological factors.

PTSD

Post-Traumatic Stress Disorder, a psychiatric disorder that may occur in people who have experienced or witnessed a traumatic event such as a natural disaster, a serious accident, a terrorist act, war/combat, or rape or who have been threatened with death, sexual violence, or serious injury.

Hypochondria

An excessive preoccupation with the fear of having a serious illness, despite medical reassurance to the contrary.