What Causes the Black Color Emitted from Black Smokers

question 45

Multiple Choice

What causes the black color emitted from black smokers?

• A) ammonia dissolution
• B) steep temperature gradients
• C) iron sulfide precipitation
• D) elemental sulfur precipitation
• E) denitrification

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Definitions:

Somatotropin

A growth hormone produced by the anterior pituitary gland that stimulates growth, cell reproduction, and cell regeneration in humans and other animals.

Antidiuretic Hormone

Antidiuretic Hormone is a hormone produced by the pituitary gland that regulates water balance in the body by controlling the amount of water reabsorbed by the kidneys.

Vasopressin

A hormone produced by the pituitary gland that regulates water balance in the body and increases blood pressure by constricting blood vessels.

Oxytocin

A hormone and neurotransmitter involved in childbirth and lactation, as well as in aspects of human behavior, such as sexual arousal, recognition, trust, anxiety, and mother-infant bonding.