When Nitrate Is Reduced to Dinitrogen Gas (N₂),nitrogen Is Removed

question 21

Multiple Choice

When nitrate is reduced to dinitrogen gas (N₂) ,nitrogen is removed from the ecosystem and returned to the atmosphere through a series of reactions collectively known as

• A)nitrogen fixation.
• B)denitrification.
• C)anammox reaction.
• D)all of the choices

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Definitions:

REM Sleep

A stage of sleep characterized by rapid eye movements, increased brain activity, and vivid dreams.

NREM Sleep

A type of sleep characterized by non-rapid eye movement, accounting for most of our sleep time and including deep sleep stages.

Insomnia

A sleep disorder characterized by trouble falling or staying asleep, which can lead to daytime fatigue and other symptoms.

Paradoxical Sleep

Another term for REM (Rapid Eye Movement) sleep, a phase characterized by vivid dreaming and muscle atonia.