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Calcium and iron compete with each other for absorption.
Carbon Dioxide
A colorless gas produced by burning carbon and organic compounds and by respiration, absorbed by plants in photosynthesis.
Binary Mixture
A mixture composed of only two components or substances in any proportion, without any chemical bonding.
Gunpowder
A mixture of saltpeter, sulfur, and charcoal, used historically as a propellant in firearms and fireworks.
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