What is the basic concept of sustainable agriculture?
What will be an ideal response?
Sustainable agriculture is agriculture that does not deplete soils faster than they form and does not destroy the biodiversity of the area. Sustainable farming and ranching do not reduce the amount of healthy soil, clean water, genetic diversity of crop plants and animals, such that agriculture can be practiced in the same way in the same place far into the future. Maintaining as much ecological biodiversity as possible in the agro-ecosystem is essential to long-term crop and livestock production. After all, our concept of sustainability is based on the functioning of intact ecosystems, and agro-ecosystems are modified ecosystems which are governed by the same rules of stability and interdependence as their natural counterparts.
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Where do the toxic gases and leachates come from that are the result of mining (not processing) for gold?
A. Sulfur compounds in the ore B. Chlorine compounds in the ore C. Carbon compounds in the ore D. Cyanide used in the operation of mining for the gold E. Heavy metals used in the operation of mining for the gold
The term "Third World" was originally a product of which of the following?
A) the Cold War B) World War II C) the Kyoto Protocol D) a United Nations ruling E) asymmetrical warfare associated with terrorism
If ice accumulation equals the amount of ice lost, the glacier will ________
A) advance B) become stationary C) retreat D) subside
Rapidly declining crude death rates are found in which stage of the demographic transition?
A) Stage 1 B) Stage 2 C) Stage 3 D) Stage 4 E) Stage 5