Examlex
Which of the following was a reason that Constantine called all bishops to a council in Nicaea in 325 CE?
Oxidation
Oxidation is a chemical reaction in which a substance loses electrons, often resulting in rust in metals or changes in rock minerals due to exposure to oxygen and water.
Iron-bearing Minerals
Minerals that contain iron as a significant component, often influencing the rock's color and magnetic properties.
Rounded Pebbles
Small, smooth rocks that have been eroded and smoothed over time by water or other natural forces.
Shells
Shells are hard, protective outer layers created by animals, particularly mollusks such as snails, oysters, and clams, as a form of protection or body support.
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