Terpenes:
Terpenes contribute to the psychoactive effect of Cannabis on the brain, working synergistically with cannabinoids. According to Leafly, there are many factors that influence a plant’s development. For example: climate, age, fertilizers, soil type, and even the time of day. Currently there are over 100 different hydrocarbons that have been identified in the cannabis plant. As a result, every cannabis strain leans toward a unique type and composition. These variations consequently provide various scents, medicinal effects and flavor values. In other words, different kinds generate different benefits. The top five most common are: Beta-Myrcene, Limonene, Alpha-Pinene, Beta-Caryophyllene and Linalool.
For more information, check out this video from Leafly.