What they mean by formatting text is ,to organise text in such a way that it becomes more attractive and easy to read
Covalent bonds allow carbon atoms to form numerous compounds.
An embolus <span>occurs when a clot breaks free from an artery wall and travels through the circulatory system until it lodges in a small artery and suddenly shuts off blood flow to the tissues.</span>
According to sources, the most probable answer to this query is electron transport chain is a step in cellular respiration that is responsible for producing the energy currency of the cell, ATP.
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