Select the correct answer. what’s the role of oxygen in cellular respiration? a. it accepts electrons and keeps the electron transport chain running. b. it breaks down carbon-based sugar molecules to release energy and forms carbon dioxide. c. it combines with hydrogen ions in sugar molecules to release energy and form water. d. it supplies electrons to the electron transport chain to keep it running.

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❖ The correct answer choice is B. It breaks down carbon-based sugar molecules to release energy and forms carbon dioxide.

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a

explanation:

primary succession begins with a bare rock and ends with a forest secondary succession begins after a natural disaster where there is a temporary setback after a forest fire or local destruction, but the surrounding area can fill in