Chemistry, 16.10.2019 13:10 bagofmud8339
Which statement best describes one positive and one negative way that society was impacted by the use of ddt? a)society was positively impacted by increased insect control in crops, but it was negatively impacted by harmful chemicals. b)society was positively impacted by insect resistance, but it was negatively impacted by harmful chemicals. c)society was positively impacted by increased insect control in crops, but it was negatively impacted by malaria and typhus. d)society was positively impacted by insect resistance, but it was negatively impacted by malaria and typhus.
Answers: 3
Chemistry, 22.06.2019 12:30, fvmousdiana
In france, grapes are 1.95 euros per kilogram. what is the cost of grapes, in dollars per pound, if the exchange rate is 1.14 dollars/euro? (2.6)
Answers: 3
Chemistry, 22.06.2019 14:30, Dreynolds1667
100 grams of molten lead (600°c) is used to make musket balls. if the lead shot is allowed to cool to room temperature (21°c), what is the change in entropy (in j/k) of the lead? (for the specific heat of molten and solid lead use 1.29 j/g⋅°c; the latent heat of fusion and the melting point of lead are 2.45 × 104 j/kg and 327°c, respectively.)
Answers: 1
Chemistry, 22.06.2019 15:00, levelebeasley1
Which theory was contradicted by experiments with the photoelectric effect? light spreads out after it passes through a small opening. as soon as light strikes metal, electrons will be ejected. visible light, regardless of color, will cause the ejection of electrons when striking metal. the kinetic energy of ejected electrons depends on the frequency of light that strikes the metal.
Answers: 2
Chemistry, 22.06.2019 15:00, hockeykid7583
Which are forms of frozen water? check all that apply. dew frost hail rain sleet
Answers: 2
Which statement best describes one positive and one negative way that society was impacted by the us...
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