Why is variety in crop plants important for "food security"? How is this threatened by GM food crops? What is the U.S. position on GM products? How does this differ from the position of other countries?
What will be an ideal response?
Varieties contain genes that, through conventional breeding, might confer resistance to disease, pests, inbreeding, and other pressures that challenge modern agriculture. Monocultures of industrial agriculture place all our eggs in one basket, so that any single catastrophe could potentially wipe out multiple crops. Wild relatives contain genetic diversity that may have ready-made solutions to unforeseen problems. The U.S. position is that GM foods are an acceptable food crop. Many nations refuse to purchase or accept food or seed crops that are GM. European countries have been extremely outspoken against the use or trade of GM foods.
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Provide an explanation for how a tornado could lift the roof off a building, and why it is not a good idea to open windows of a building during a tornado
What will be the ideal response?
What world region has been a "particularly powerful draw" as a destination of migration for people in Southwest Asia and North Africa who are looking for opportunity?
A) North America B) Australia and Oceania C) East Asia D) Europe E) the Russian Domain
What happens during movement along rotating fault blocks?
A. The corner of a block that is rotated down becomes a basin. B. The crust is thickened by the compression. C. The layers within the blocks rotate, but the blocks themselves do not. D. The layers and blocks rotate, but the faults do not rotate. E. None of these choices are correct.
The temperature of the intrusive magma has little effect on the metamorphic minerals formed Indicate whether the statement is true or false