O₂ Is Critical for Terrestrial Life on Earth Because It

question 193

Multiple Choice

O₂ is critical for terrestrial life on Earth because it

• A) allows for anaerobic metabolism.
• B) blocks UV radiation.
• C) provides energy to some basic forms of life.
• D) provided food for early prokaryotes.
• E) once led to production of ozone in the upper atmosphere.

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Definitions:

Nephrolithiasis

The medical term for kidney stones, which are hard deposits of minerals and salts that form inside the kidneys.

Renal Colic

Severe pain caused by kidney stones blocking the flow of urine.

Oliguria

A medical term for reduced urine output, usually defined as less than 400 milliliters per day in adults.

Olig-

A prefix meaning "few" or "small," used in medical terms to indicate a reduced quantity.