RNR 1001 Chapter : RNR 1001 Feb 8th 9
Document Summary
Water footprint (water required to diluted pollutants to meet wq standards; Unreturned ground water, evaporation from irrigation; evaporation during production of goods, rainwater evaporation form cropland) Back to our original question: how many people can the planet. Adequate food is produced to provide 2700 kcal per person for everyone in the planet. However, undernurition and malnutrition are common in developing countries, wit h10~13 million deaths each ear from starvation and related maladies (mostly children) At a u. s. standard of living- maybe 2 billion, already need > 3 planets. One obvious consequence of increasing human population size is resource scarcity. Two types: absolute resource scarcity and relative resource scarcity. Indium-lcds and solar panels-predicted availability at current rates of use 15 years. Antimony- semi-conductors flame retardants alloys-predicted availability at current rates of use- 15 years. Lead, tin, zinc- batteries cans pipes-predicted availability at current rates of use- Relative resource scarcity results from imbalanced distribution of resources.
