Aerobic respiration produces as products.

glucose, oxygen, and energy
carbon dioxide, water, and glucose
carbon dioxide, water, and energy
glucose, oxygen, and water

carbon dioxide, water, and energy

Explanation: Aerobic respiration is a type of respiration that takes place in the presence of oxygen. In the presence of oxygen, a molecule of glucose is broken down in the cell to produce carbon dioxide and water with the release of energy. The energy released is in form of ATP. The equation for cellular respiration is C6H12O6 + 6O2 --> 6CO2 + 6H2O + Energy. The energy released in cellular respiration is used by the cells to drive other cellular processes.

before, trains worked using the steam engine. thus, it uses heat so it is crucial to apply heat balance. the steam engine absorbs energy during the stage of boiling water. so, this is the endothermic reaction. when the steam is used to work the piston, it has to release this energy through running the train. the excess energy is released as an exhaust to the chimney. this is the exothermic process because it releases energy to the surroundings.

the answer is lactic acid from anaerobic respiration. the acid in lactic acid is what creates sore and burning muscles. if you think about how acid burns that will give you a clue for questions like this.