The correct answer is
D) gathering food.<span>Caching or hoarding food, is a behavior characteristic for squirrels during winter. They usually do this by putting their food in a shallow hole which will serve as food when resources are scarce in winter. Also, squirrels maximize their food consumption and body mass making the reserves that will help the animals survive.</span>
Water Vapor is when water evaporates causing a liquid to turn into a gas form. Depends on the weather. Sunny weather would lead to evaporation. <span />
The student could measure only the rate of anaerobic respiration by measuring the carbondioxide gas concentration.
<h3>How to measure the rate of anaerobic respiration?</h3>
In the absence of oxygen, yeasts convert glucose into ethanol and carbon dioxide. This rate of carbon dioxide is used to measure of the overall rate of anaerobic respiration.
So we can conclude that the student could measure only the rate of anaerobic respiration by measuring the carbondioxide gas concentration.
Learn more about respiration here: brainly.com/question/22673336
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Testosterone and serotonin are the two hormones consistently related to high levels of aggression.