"Carpeting", and "furniture increased ventilation" inefficient indoor cook stoves "VOCs from paints".
Option: C
<u>Explanation</u>:
VOC's are really harmful solvents that are released in the air as the paint dries. The VOC's can create acute health symptoms which may result harmful after some time, like dizziness, headache, and many more. Generally, the long term effects are not that evident, but some VOC's are more carcinogens according to US environmental protection agency. Although, many paint companies claim that their paints are VOC free which is actually false. It might be true that the VOC is not present in the base of the paint, but when the pigment is added to the paint the VOC increases. Hence, carpeting, furniture, cook stoves and VOC's from paints are really harmful indoor pollutants.
The answer to this question would be: thyroxine and insulin from pig
Pig is a mammal that was frequently used in medical field. Some hormone like insulin was produced by pigs and used to treat diabetes patient before another method was found. Hypothyroid patient also can get pig thyroxine hormone to treat their deficiency of thyroid hormone.
They don't have facts about the machine or pictures/videos.the scientist didn't prove that he made the machine. hope this helps ;)
The sewage is full of bacteria which uses a lot of oxygen and the mayfly larvae might not have enough oxygen to live if they live by sewage