All of the following are macronutrients found in soil EXCEPT
A. Phosphorus
B. Carbon dioxide
C. Potassium
D. Nitrogen
Answer: B
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A beekeeper society is interested in the production of honey in a region, and have theorized that honey production is a function of the number of bees in a hive, whether the farms near the hive use pesticides, and the local temperature. Perform an ordinary least squares regression on the following data, with honey production being the dependent variable, and plot the residuals in space. Do they show signs of autocorrelation? Use an added variable plot to determine whether they should also include the distance between the hives and a local orchard located at (8,10) in their regression. Run the regression again with the new variable and compare the r2 values and standard errors.
Olympic gold medal sprinter Usain Bolt is from which island nation in the Caribbean?
A) Bahamas B) Jamaica C) Cuba D) Barbados E) Dominica
Brain drain is the loss of highly skilled professionals from rich countries to poor countries
Indicate whether the statement is true or false.
Which of the following is a key part of the formation of most natural bridges?
A. folding of soft rock layers B. stream erosion C. spheroidal weathering D. volcanic eruptions E. None of these choices are correct.