Cigarette Ingredients. Cigarette smoke contains over 4,000 chemicals, including 43 known cancer-causing (carcinogenic) compounds and 400 other toxins. These cigarette ingredients include nicotine, tar, and carbon monoxide, as well as formaldehyde, ammonia, hydrogen cyanide, arsenic, and DDT.Nicotine is highly addictive.igarette smoke contains over 4,000 chemicals, including 43 known cancer-causing (carcinogenic) compounds and 400 other toxins.
Harbour porpoise skeleton on display. The harbour porpoise is a little smaller than the other porpoises, at about 67â85 cm (26â33 in) long at birth, weighing 6.4â10 kg. Adults of both sexes grow to 1.4 to 1.9 m (4.6 to 6.2 ft). The females are heavier, with a maximum weight of around 76 kg (168 lb) compared with the males' 61 kg (134 lb). The body is robust, and the animal is at its maximum girth just in front of its triangular dorsal fin. The beak is poorly demarcated.
Porpoises are part of the scientific family Phocoenidae, while dolphins are part of the Delphinidae family. When you concentrate on the differences at the family level, dolphins and porpoises can seem quite different. There are definite, yet subtle physical differences between the two aquatic mammals. Porpoises tend to be smaller than dolphins. While dolphins can be 10 feet long (or longer!), porpoises are rarely longer than 7 feet. Dolphins also tend to be leaner and sleeker, while porpoises are more compact and often look chubby in comparison. Dolphins usually have beak-like, pointed snouts, while porpoises have blunt, rounded noses.