Afarmer uses triazine herbicide to control pigweed in his field. for the first few years, the triazine works well and almost all the pigweed dies; but after several years, the farmer sees more and more pigweed. which of these explanations best explains what happened? a. the herbicide company lost its triazine formula and started selling poor-quality triazine. b. triazine-resistant weeds were more likely to survive and reproduce c. natural selection caused the pigweed to mutate, creating a new triazine-resistant species d. triazine-resistant pigweed has less efficient photosynthesis metabolism.
Answers: 1
Chemistry, 21.06.2019 23:30
Calculate the expected ph values of the buffer systems from the experiments (a,b,c,d), using the henderson- hasselbalch equation, ph-pka+log[a-]/[ha]. use for pka values carbonic acid= 6.37, and acetic acid= 4.75.
Answers: 2
Chemistry, 22.06.2019 08:30
Which change in temperature is the smallest? a change of 1 thomson degree a change of 1 kelvin degree a change of 1 fahrenheit degree a change of 1 celsius degree
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Chemistry, 23.06.2019 01:30
Some molecular compounds, such as hcl, ionize completely in solution. for molecular compounds such as h2co3, most molecules do not ionize in solution. which describes the properties of these two solutes? a. hcl and h2co3 have the same effect on the properties of the solution. b. hcl raises the freezing point of water more than h2co3 does. c. hcl raises the boiling point of water more than h2co3 does.
Answers: 2
Afarmer uses triazine herbicide to control pigweed in his field. for the first few years, the triazi...
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