I would have to say the answer is C.
A is incorrect since hydrogen is not an air pollutant.
B is incorrect because ozone is most definitely one of the top.
And D has cyanide which is a chemical for suicide during wars.
Hope this helps!
Vitamin B-Complex is one of the vitamins that help our body to function properly. It has all the essential nutrients that helps convert food into nutrients in order to fuel and energized our body. Vitamin B-Complex is water-soluble, it means that it can be easily dissolved in water.
So the answer is : Complex.
Eccrin glands is one out of the two types of sweat glads that occur over most of your body and open directly onto the surface area of your skin. When your body tempature rises, your Eccrin glands secrete fluid onto the surface of Your skin, where it cools your body as it may evaporate.
B) Vaginal
Vaginal is always the best option, all these others have a higher risk of damage to the internal glands.
