Although action and reaction<span> forces are always equal and opposite to </span>each other<span>, they are acting on two </span>different<span> objects. Saying that the forces </span>balance each other<span>implies that they are adding up to equal zero. Forces are only added when they are acting on the same object, </span>not<span> on </span>different<span> objects</span>
Cross contamination can happen. It is the process in which the microorganisms can be transferred from one substance to another and causing a dangerous effect especially on food thus the answer is Canned goods should be free of dents and any bulging lids to avoid this.
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Bloody yellow mucus may be a sign that the nasal passageway is irritated and could be a result of congestion, dryness or inflammation in the area caused by a possible infection. Hope this helps!
