By Frederic R. Siegel
This ebook discusses becoming populations emphasizing either local and nationwide occasions. For the 1st time issues together with inhabitants progress, atmosphere chemistry and improvement making plans were melded right into a unmarried text.
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Extra resources for Demands of Expanding Populations and Development Planning Clean Air Safe Water Fertile Soils
Two hundred and fifty cities globally (150 in China) have more than one million inhabitants. As noted in the previous chapter, over 20 of them worldwide have grown into urban agglomerations with more than 10 million people. , Mexico City, Los Angeles, Tokyo, Osaka-Kobe, Istanbul). 40 3 Population Needs for Well-Being The magnitudes and reaches of natural hazards are such that they can be threats to life and property at some distance from where they strike. Here, populations may not be concentrated but dangerously located with respect to a hazard event and secondary events they may trigger.
In some cases, government investment for such systems benefit a few economicallyadvantaged and politically-connected people, and the military. This leaves major populations at risk of debilitating diseases because they lack access to safe water. Untainted Food Modern field and fruit tree cropping, foul and animal husbandry, plus natural and aquaculture fisheries can, in theory, yield the food to nourish the projected 2050 world population. However, unless organic farming is the modus operandi so that these foods can be grown clean, soils need the application of manufactured fertilizers and biocides to sustain long-term production.
Organic farming contributes to our food bank. This agriculture uses natural fertilizers and pest control by predators that do not threaten crops or ecosystem inhabitants. However, there is the question of whether organic farming can produce large enough quantities of food to feed a significant portion of the 2050 world population. Plant hybridization can develop species that are pest-resistant and that discriminate against uptake of toxic levels of contaminants. This will be increasingly important for farming in the future.