Essentially-used to emphasize the basic, fundamental, or intrinsic nature of a person or thing.

Particles-a minute portion of matter.

There-in, at, or to that place or position.

Vitamin-any of a group of organic compounds which are essential for normal growth and nutrition and are required in small quantities in the diet because they cannot be synthesized by the body.

Temperature-the degree or intensity of heat present in a substance or object, especially as expressed according to a comparative scale and shown by a thermometer or perceived by touch.

Carbon dioxide- a colourless, odourless gas produced by burning carbon and organic compounds and by respiration. It is naturally present in air (about 0.03 per cent) and is absorbed by plants in photosynthesis.

Methane-a colourless, odourless flammable gas which is the main constituent of natural gas. It is the simplest member of the al Kane series of hydrocarbons.

Nitrous oxide- a colourless gas with a sweetish odour, prepared by heating ammonium nitrate. It produces exhilaration or anaesthesia when inhaled and is used (mixed with oxygen) as an anaesthetic and as an aerosol propellant.

Intricately- very complicated or detailed.

Irreversibly- not reversible; incapable of being changed: