A High ? 18oxygen/16oxygen Ratio in the Shells of Marine

question 22

Multiple Choice

A high ? 18oxygen/16oxygen ratio in the shells of marine animals indicates __________.

• A) colder temperatures and lower sea levels
• B) higher temperatures and lower sea levels
• C) colder temperature sand higher sea levels
• D) warmer temperatures and higher sea levels

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Definitions:

Emphysema

A chronic respiratory disease characterized by the destruction of air sacs in the lungs, leading to breathing difficulties and reduced oxygen exchange.

Blood Ph

A measure of the hydrogen ion concentration in the blood, reflecting its acidity or alkalinity, vital for maintaining homeostasis in the body.

Concentration

The amount of a substance in a given volume, or how densely packed the molecules of that substance are.

Enteropathogenic E. Coli

A type of Escherichia coli bacteria that causes diarrhea by colonizing the intestinal mucosa, mainly affecting infants and young children.