This Dark Gray Igneous Rock Is Glassy and Elsewhere Contains

question 184

Multiple Choice

This dark gray igneous rock is glassy and elsewhere contains small vesicles and flow bands. What type of rock is this?

• A) basalt
• B) rhyolite or obsidian
• C) welded tuff
• D) volcanic breccia

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Definitions:

Carboxyhemoglobin

Carboxyhemoglobin is a complex of carbon monoxide and hemoglobin that forms in red blood cells upon exposure to carbon monoxide, preventing normal oxygen delivery to the body.

Carbaminohemoglobin

A compound of hemoglobin and carbon dioxide, and it is one of the ways in which carbon dioxide is transported in the blood.

Hemoglobin

This substance in red blood cells facilitates the transfer of oxygen from the lungs to the body's organs and tissues and carries carbon dioxide from these areas back to the lungs.

Embryonic

Pertaining to the embryo, an early developmental stage in multicellular organisms after fertilization but before birth or hatching.