Photosynthesis Is the Major Source of Oxygen in Earth's Atmosphere

question 11

True/False

Photosynthesis is the major source of oxygen in Earth's atmosphere.

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Definitions:

Hysteria

A term once used to describe what are now known as conversion disorder, somatic symptom disorder, and illness anxiety disorder.

Generalized Anxiety Disorder

A disorder marked by persistent and excessive feelings of anxiety and worry about numerous events and activities.

Posttraumatic Stress Disorder

A psychiatric disorder that can occur in people who have experienced or witnessed a traumatic event, characterized by flashbacks, avoidance behaviors, and changes in mood.

Posttraumatic Stress Disorder

A psychiatric disorder that may occur in people who have experienced or witnessed a traumatic event, involving persistent frightening thoughts and memories of the ordeal.