At Which Altitude Do Cirrus Clouds Develop in the Troposphere

question 30

Multiple Choice

At which altitude do cirrus clouds develop in the troposphere?

• A)between 3 and 6 km (10,000-20,000 ft)
• B)above 6 km (20,000 ft)
• C)below 3 km (10,000 ft)
• D)between 0 and 6 km (0-20,000 ft)

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Definitions:

Melatonin

A hormone produced by the pineal gland that regulates sleep and wakefulness.

Secreted

Refers to the process by which substances are produced and discharged from cells or glands, often into the bloodstream or external environment.

Pineal Gland

A small endocrine gland in the brain that produces melatonin, a hormone that regulates sleep-wake cycles.

Delta Rhythm

Slow brain-wave activity pattern associated with deep sleep.