tetrahydrocannabinol (THC) [-hiâ²drÅkÉnabâ²inol] the active principle, occurring as two psychotomimetic isomers, in the hemp plant Cannabis sativa, used in the preparation of marijuana, hashish, bhang, and ganja. THC increases pulse rate and has variable effects on blood pressure.
Over the last 3.7 billion years or so, living organisms on the Earth have diversified and adapted to almost every environment imaginable. The diversity of life is truly amazing, but all living organisms do share certain similarities. All living organisms can replicate, and the replicator molecule is DNA. As well, all living organisms contain some means of converting the information stored in DNA into products used to build cellular machinery from fats, proteins, and carbohydrates. Three Domains of Life
He argues that what probably happened was the exact opposite-chemical variety was probably beneficial and increased the probability of life. The issue is how this chemical diversity eventually turned into self-replicating chemicals-i.e. life. He proposed the idea that life began within a mixture of simple rather then complex organic molecules, multiplied through catalyzed reaction cycles and an external source of available energy.