2. sun, wind, rain
i think it’s that
Anaerobic Respiration: The incomplete breakdown of glucose<span> WITHOUT </span>OXYGEN<span>resulting in a few ATP's and other high energy molecules. Two types of anaerobic respiration; Alcoholic Fermentation (yeast cells) and </span>Lactic Acid Fermentation<span>(higher animal muscle tissue during heavy activity).</span>
<h3>Answer is: Scientific <em>Experiment</em></h3>