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
In British Columbia, western Canada, renowned for its's coniferous forests, the poaching of protected magnificent old growth trees is fairly common and examples have been found in our park-protected areas of cutting of 800-1000 year old giants in the Carmanah Walbran Provincial Park.
Answer:
sandstone will faster because it is softer than granite