Except near Hydrothermal Vents, the Communities of the Oceanic Aphotic

question 61

Multiple Choice

Except near hydrothermal vents, the communities of the oceanic aphotic zone get their energy mainly from

• A) photosynthesis by local phytoplankton.
• B) photosynthesis by local zooplankton.
• C) oxidation of sulfur by sulfur bacteria.
• D) organic matter sinking from the photic zone.

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Definitions:

Sleep Apnea

A disorder characterized by pauses in breathing or periods of shallow breathing during sleep.

Narcolepsy

A sleep disorder characterized by excessive daytime sleepiness and sudden attacks of sleep.

Night Terrors

Intense episodes of panic and fear that occur during sleep, often involving screaming, thrashing, and a feeling of extreme terror.

Insomnia

A sleep disorder characterized by difficulty falling asleep, staying asleep, or experiencing restorative sleep.