Convection currents in the Earth's mantle cause plate movement which causes earthquakes and volcanic activity.
Answer:
Oxygen.
Explanation:
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Yeast fermentation in the food industry must be carried out under anaerobic conditions as long as when oxygen is present respiration occurs rather than fermentation.
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Whether or not they are within the same group (vertical columns) within the periodic table, determines similarity of chemical properties.
A compound can be treated like an element when balancing chemical equations when : A. when there is no change to the atoms in the compound
If they remain together during the reaction, you can treat a compound as a singe atom.
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