â¢ A red blood cell circulates around your body in about 20 seconds. The same red blood cell makes tens of thousands of trips around your body, transporting oxygen to cells, before it is recycled by your own immune system. â¢ Red blood cells in humans are molecularly quite similar to chlorophyll cells in plants.
Lysergic Acid Diethylamide (LSD) Lysergic acid diethylamide (LSD), also known as acid, belongs to a class of drugs known as hallucinogens, which distort perceptions of reality. LSD is the most potent mood- and perception-altering drug known: doses as small as 30 micrograms can produce effects lasting six to 12 hours.
DEA. The U.S. Drug Enforcement Administration lists marijuana in the most restrictive of five classes that the agency uses to regulate dangerous drugs. Marijuana is classified as a Schedule I substance, which is the ranking reserved for drugs with the greatest potential for abuse and with no medicinal value.Heroin, ecstasy and LSD are listed in that category, too, while cocaine and methamphetamine rank one level lower than marijuana, as Schedule II.arijuana has been classified as a Schedule I drug, the highest rank by the Drug Enforcement Administration, since the 1970s. Marijuana's listing among the most dangerous drugs has been heavily influenced over the years by politics and public opinion, while advocacy groups have been working to change it for decades.