Which Isotope Can We Analyze from Ice Cores to Give

question 25

Multiple Choice

Which isotope can we analyze from ice cores to give us data about the past climate?

• A)¹⁶O
• B)¹⁴N
• C)¹⁸O
• D)CO₂
• E)¹⁴C

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Definitions:

Renin Levels

The concentration of renin, an enzyme secreted by the kidneys that plays a key role in the body's regulation of blood pressure.

Acidosis

A pathological condition where there is an excess of acid in the body fluids, marked by an abnormally low blood pH.

Bicarbonate Reabsorption

The process by which the kidneys reclaim bicarbonate ions from the urinary filtrate, helping to maintain blood pH balance and electrolyte concentration.

Body Fluids

Liquids within the human or animal body that transport nutrients and waste, including blood, lymph, and interstitial fluid.