How does an herbicide’s target site influence the likelihood that resistant weed populations will be selected?
What will be an ideal response?
Several times during the growing season, herbicides are applied in large
amounts by plane on huge fields of herbicide-resistant crops, for example,
Roundup Ready® plants. If at least 1,000 different weed plants grow in this
area, which is likely, at least one or two weed plant types will naturally resist
the herbicide and will survive and reproduce. This situation leads to an
herbicide-resistant weed variety. Students can find information on this topic
by doing an Internet search on the “evolution of herbicide resistant weeds”
or the “genetics of herbicide resistant weeds.” They will find this is a major
agricultural problem.
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Should the Allied victory in World War II be seen as proof of the strength of democracy? Support your answer with specific evidence regarding the course and conduct of the war.
What will be an ideal response?
Soft copper tubing can be joined by:
A) Compression fittings. B) Soldering and brazing. C) brazing, soldering, flaring, or compression. D) Flare fittings.
Although some calipers will fit either side of a vehicle, they should not be interchanged because the ________
A) Bleeder valve will be in the wrong position B) Shoes must be reversed C) Pistons move in opposite directions D) Dust boots may not seal properly
A truck equipped with air-over-hydraulic brakes has illuminated a dash-warning light indicating excess brake lining wear. What would generate this signal?
A. the brake system ECU B. the rear drums C. ABS sensor D. brake pedal