[Energy people are watching, click on the top right corner to add 'Follow']
Polaris Solid Waste Network News:【Review of the previous section】
In the previous section, Mr. Huang mainly talked about the definition of POPs (persistent organic pollutants), and explained in detail the four more troublesome properties that POPs have at the same time, namely: persistence, bioaccumulation, toxicity and long-distance migration.
Following the definition of the previous section, Teacher Huang took you through the history of POPs in this section.
Global population growth
The dependent arising of everything, we can push it to the most basic things. For a long time, we can see from this black line that the actual growth of the global population is quite limited. And in the last century or so, our population has grown very rapidly.
The increase in population has created two problems, the first is to eat, and the second is to consume a variety of energy. Therefore, food and energy are the two major needs directly generated by population growth.
From the statistical data, we can see that it seems that the food we produce and the energy we provide are very consistent with the data of the population, which is a relatively good phenomenon.
From the economic data, we can see that for a long time, GDP has been relatively stable, because for a long time we are all agricultural economies, and the development is relatively slow.
But around 1900, the whole situation changed completely. We can see that both GDP and PER capita GDP have grown rapidly. So why? What happened at this time?
Food solutions
Looking at the situation in our country, after the founding of the People's Republic of China in 1949, grain production has been increasing along with the growth of population.
Disclaimer: The above content is reproduced from Polaris Environmental Protection Network, and the content posted does not represent the position of this platform.
National Energy Information Platform Tel: 010-65367702, Email: [email protected], Address: People's Daily, No. 2 Jintai West Road, Chaoyang District, Beijing