In the U.S. alone, farmers spray, spread, and otherwise administer more than 970 million tons of insect- and plant-killers every year. These pose threats to the environment. Pesticide residues linger on crops and in soil, find their way into the guts of wildlife that eat contaminated foliage, and leach into groundwater and wash into streams.
If a crop boasts its own ability to resist invertebrate predators, then farmers can use far fewer chemicals. In 1999, according to the Environmental Protection Agency, cotton farmers in states raising significant amounts of cotton genetically modified to withstand pests sprayed 21 percent less insecticide -- that is, they sprayed one to two times rather than eight to ten.
-Sprayed 21% less insecticide
Similarly, endorsers profess that farmers raising crops bearing herbicide resistance -- such as those using the Monsanto-crafted soybean that is resistant to the company's broad-spectrum weed killer Roundup -- will use fewer chemicals in a season than they would while growing conventional soybeans.
Industry spokespersons acknowledge the possibility that cross-pollination could occur between some types of GM crops and weeds. But they claim there are ways around that, such as creating GM crops that are male-sterile -- that is, produce no pollen -- or modifying a GM plant so its pollen doesn't have the introduced gene. As for the danger of pests growing tolerant of plant-borne insecticide, farmers can create buffer zones of conventional crops around GM fields to give harmful insects something to feed on, reducing the selection pressure to adapt to the anti-pest plant. Buffer zones would also deter cross-pollination and provide a refuge for harmless and beneficial insects.
-Reduce risk of creating "superweeds" via cross-pollination by making GM plants male sterile or modifying their pollen
-Create buffer zones to reduce selection pressure and provide a place for beneficial insects
What if you knew that scientists submit that genetically modifying plants is completely natural?
Genetic modification couldn't be more natural, geneticists say. Plants (and animals) genetically modify themselves all the time. That's the basis of evolution. We've been genetically modifying plants (and animals) for millennia. That's the basis of agriculture.
-Genetic modification is natural because it is the basis of evolution
Our manipulation of a single mustard species has generated such diverse vegetables as broccoli, Brussels sprouts, and cabbage. Altogether, the wild ancestors of grapes, potatoes, and all other fruits and vegetables you find today on grocery-store shelves are but pale shadows of their modern, highly modified descendants. All have gone through countless generations of careful hybridization and genetic breeding to improve yields, taste, size, texture, and other attributes.
-Plants (fruits and vegetables) self-evolve, which is considered genetic modification
Modern GM methods are simply more precise, scientists stress. Whereas traditional plant breeding involves thousands of shared genes every time two plants are crossed, GM technology allows, if desired, for the exchange of a single gene between plants. GM procedures are also much faster. In months or years, molecular scientists can accomplish the same degree of alteration that might have taken Nature millions of years to achieve.
-Genetic engineering is like natural modification, except that it is much more precise and quick
What if you knew that companies that fashion GM seeds maintain that GM crops hold the greatest hope for adequately feeding our rapidly expanding world population?
Biotech spokespersons have argued that, while the industry is indeed concerned about the bottom line, it is primarily driven by research and innovation. Their argument is straightforward: Innovation is the only way to meet the world's burgeoning needs for food and medicines in a rapidly shrinking and increasingly scarred natural environment. Innovation requires costly and time-consuming research and testing, which will only happen if it's paid for. The best way to ensure it's paid for is through intellectual property protection. Patents should operate worldwide, they maintain, because markets are increasingly global in nature.
-World population is rapidly increasing, environment is being depleted, and the world must increase crop production
-This can only be done using genetically modified crops
The result of this innovation will be GM crops that will offer our best chance to adequately address the challenge of feeding the estimated six billion people who, in as few as 50 years by some estimates, will join the six billion of us already here. GM crop farming holds out greater promise than conventional farming of boosting production on the same amount of ground, adherents say, and of raising crops where none could grow before, such as on salt-laden land. In increasing yields and making marginal lands productive, GM promoters insist, lie our only means of staving off widespread famine in developing countries in the coming decades.
-Increasing yield for the same amount of groundBiotech firms hold that every GM food crop is thoroughly tested for possible health effects. They conduct these in-depth analyses, they say, because they are legally required to ensure foods they sell meet federal safety standard
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