Probably the earth is shaking and building are falling I highly doubt you would be able to forecast a earthquake without falling or hurting your self but it would be pictures of the aftermath.
Answer: a. Aerobic respiration, b. Anaerobic respiration.
Explanation: Oxygen is an essential component for aerobic respiration because it is at the end of the electron transport chain, where it accepts electrons and picks up protons to give out water.
The final acceptor of electrons in the electron transport chain during aerobic respiration is oxygen.
The final electron acceptor in the Anaerobic respiration are inorganic molecules such as sulfates. Inorganic molecules are used rather than Oxygen.
Oxygen
