Planting fields with different crops each year is called _____ and can be an insect control method
a. cover crops c. crop residues
b. crop rotation d. border cropping
B
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____ joints can be created by cutting the fresh concrete or sawing the concrete within six to eight hours of placement.
A. Control B. Relief C. Shift D. Spread
In the United States, there are over ____________________ million acres of cropland
Fill in the blank(s) with correct word
The article “Computing and Using Rural versus Urban Measures in Statistical Applications” discusses methods to measure the degree to which U.S. counties are urban rather than rural. The following frequency table presents population frequencies of U.S. counties. Populations are on the log2 scale; thus the first interval contains counties whose populations are at least 26 = 64 but less than 212.4 = 5404, and so on.
a. Construct a histogram from the frequency table.
b. Estimate the proportion of counties whose populations are greater than 100,000.
c. Is the histogram skewed to the left, skewed to the right, or approximately symmetric?
d. Construct a histogram using the actual populations rather than their logs. Why do you think the article transformed the populations to the log scale?
Animals tend to act and respond in accordance with past experiences. Therefore, it is important to help them have good experiences early and often
A. True B. False