I only know the answer for No 2)
It is Microfilaments which are the part of cells skeleton.
Answer:
Polyethylene glycol.
Explanation:
The abdominal pain might occur in the area of the pelvic regions and the chest area. The lower abdominal pain is common in children that might occur due to the constipation.
The increase or the presence of the polyethylene glycol in the abdomen can cause pain. This affects the bowel movements, bloating, vomiting, diarrhea and in excess condition may also cause the rectal bleeding in the children as well as in adult.
Thus, the answer is polyethylene glycol.
This decrease of pressure in the thoracic cavity relative to the environment makes the cavity pressure less than the atmospheric pressure. This pressure gradient between the atmosphere and the thoracic cavity allows air to rush into the lungs; inhalation occurs. The resulting increase in volume is largely attributed to an increase in alveolar space because the bronchioles and bronchi are stiff structures that do not change in size.
