Why Is Iron Significant to Understanding How a Supernova Occurs

question 139

Multiple Choice

Why is iron significant to understanding how a supernova occurs?

• A)Iron is the heaviest of all atomic nuclei, and thus no heavier elements can be made.
• B)The fusion of iron into uranium is the reaction that drives a supernova explosion.
• C)Iron cannot release energy either by fission or fusion.
• D)Supernovae often leave behind neutron stars, which are made mostly of iron.

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Definitions:

Carbon Dioxide

Carbon dioxide is a colorless, odorless gas produced by burning carbon and organic compounds and by respiration. It is naturally present in the air and is absorbed by plants in photosynthesis.

Blood CO2 Levels

The concentration of carbon dioxide in the blood, which is critical for maintaining the body's acid-base balance.

Respiratory Variables

Measurements and factors that characterize the functioning of the respiratory system, such as lung volume and breathing rate.

Minute Respiratory Volume (MRV)

This refers to the total volume of gas that is inhaled or exhaled from a person's lungs in one minute.