The result will usually be that the vinegar cleans the pennies better, demonstrating that a lower-pH solution is better at cleaning discoloration due to oxidation. The volume of liquid and the material of the penny are both controlled variables in this experiment. This experiment is especially good for teaching the concept of a controlled variable if you include a third variable -- how dirty the pennies are.
1 doctor agreed: Yes: Pinworm symptoms can include gastrointestinal upset, anal or vaginal itchiness, loss of appetite, difficulty sleeping, irritability, restlessness. Untreated pinworm infection can lead to weight loss, diarrhea, genital rash, urinary incontinence and vaginal discharge.
People with intestinal worms may experience digestive changes, including loss of appetite or nausea when presented with food. If a large amount of worms accumulates in the intestines, the intestines can become obstructed, which can result in constipation. Intestinal worms can also cause diarrhea, which may be bloody.Adult worms may also be present in the feces. Tapeworm infections can cause people to develop abdominal pains and cramping.ntestinal worms can also cause diarrhea, which may be bloody. Adult worms may also be present in the feces. Tapeworm infections can cause people to develop abdominal pains and cramping.