Carbon Dioxide Exchange Between the Atmosphere and Aquatic Ecosystems Occurs

question 20

Multiple Choice

Carbon dioxide exchange between the atmosphere and aquatic ecosystems occurs

• A) unidirectionally from atmosphere to aquatic ecosystems, with net gain to aquatic ecosystems.
• B) unidirectionally from aquatic ecosystems to the atmosphere, with net gain to the atmosphere.
• C) bidirectionally, with net gain to aquatic ecosystems.
• D) bidirectionally and nearly equally.
• E) bidirectionally, with net gain to the atmosphere.

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Definitions:

Scrotum

The pouch of skin that hangs below the penis in males, housing the testicles and parts of the spermatic cord, playing a role in temperature regulation for sperm production.

Prostate

A gland in male mammals surrounding the neck of the bladder and urethra, involved in the production of seminal fluid.

Anus

The terminal end of the digestive tract where feces are expelled from the body.

Azoospermia

A medical condition characterized by the absence of sperm in the semen.