1. A <em>population density</em>
2. B <em>underpopulation</em>
3. A <em>overpopulation</em>
The idea of global cooling gained popularity about during the 1970s, <span>“There are ominous signs that the earth’s weather patterns have begun to change dramatically,” </span>Newsweek reported in 1975. At the time the highly influential source convinced <span>“drastic decline in food production.”, at that time climate scientists were convinced that a ice age was coming. Global temperatures falling between 1940 to 1975 drove the concern of global cooling, little did they know it was only a temporary fall of temperature.
That's as much as I know, hope it helped! :)</span>
All 3 sciences, geology, criminology and psychology in human geography, oceanography (if thats a thing), vulcanology