XUXUSUS Since 2008, GMO crops have accounted for more than 80% of the com and soybean crops planted in the U. S. Corn (maize) seeds
are modified with two genes: one kills insects that eat the seed and one allows the seed to tolerate glyphosate, a herbicide
commonly used in weed killers like Roundup. Soybeans are modified with just one glyphosate-resistant gene. Since 2008,
scientists at the University of Virginia have been monitoring the effects of planting GMO corn and soybeans within farm
ecosystems. The UVA study found evidence that both corn and soybean farmers have increased herbicide use during the last five
years and the scientists concluded that the planting these GMO crops are having a negative impact on the local environment. Why?
ALL BUT ONE choice provides a valid reason
A)
Increased herbicide use results in increased contamination of aquatic
ecosystems.
B)
Farmers resort to using additional chemicals as glyphosate-resistant weeds
evolve
C)
The cultivation of GMO's led to a significant increase of yield compared to
the non-GMO varieties.
D)
Herbicides can have unintended consequences for nontarget plant species,
thereby reducing plant biodiversity

answer: - 3.) the oxidation state of nitrogen in no changes from +2 to 0, and the oxidation state of carbon in co changes from +2 to +4 as the reaction proceeds.

solution: - as per the rules, oxidation number of oxygen in its compounds is -2. the sum of oxidation numbers of all the elements of a molecule or compound is zero.

also, the oxidation number in elemental form is zero.

in no, the oxidation number of o is -2 so the oxidation number of n is +2 so that the sum is zero.

similarly, the oxidation number of c in co is +2 and o is -2.

on product side the oxidation number of n is 0 as it is in the elemental form() .

oxidation number of c in carbon dioxide is +4 as there are two oxygen in it and we know that each oxygen is -2.

so, oxidation number of n is changing from +2 to 0 and the oxidation number of c is changing from +2 to +4.

since nitrogen is reduced and hence no is acting as an oxidizing agent. carbon is oxidized and so co is acting as a reducing agent.

so, the right choice is number 3.)the oxidation state of nitrogen in no changes from +2 to 0, and the oxidation state of carbon in co changes from +2 to +4 as the reaction proceeds.

helloi think dog cat bunny dog cat bunny dog cat bunny

there is none because earth is stationary and flat.

i think its 100

i hope this !