Atmospheric sciences Atmospheric sciences Atmospheric sciences are the study of the Earth's atmosphere, its processes, the effects other systems have on the atmosphere, and the effects of the atmosphere on these other systems. Meteorology includes atmospheric chemistry and atmospheric physics with a major focus on weather forecasting. Climatology is the study of atmospheric changes (both long and short-term) that define average climates and their change over time, due to both natural and anthropogenic climate variability. Aeronomy is the study of the upper layers of the atmosphere, where dissociation and ionization are important. Atmospheric science has been extended to the field of planetary
Long-term effects of cannabis in adolescent users. Cannabis can contain over 100 different cannabinoid compounds, many of which have displayed psychoactive effects. The most distinguished cannabinoids are ∆9 – THC (THC) and cannabidiol (CBD), with THC being the primary agent responsible for the psychoactivity of cannabis. The effects of THC and CBD are salient regarding psychosis and anxiety. As of 2017 there is clear evidence that long term use of cannabis increases the risk of psychosis, regardless of confounding factors, and particularly for people who have genetic risk factors. Numerous studies have been conducted regarding anxiety and cannabis for therapeutic purposes, and these cross-sectional