Many wasps and bees have an hourglass-shaped body with prominent striping. Most also have a sting that they use for defense and/or for capturing prey
Tropical entomologists have long known that there are many other species of insects that lack a sting, such as flies, moths and beetles, that are remarkable mimics of bees and wasps. The mimics probably arose through A) interbreeding with wasps and bees in the remote past.
B) developing a strong desire to survive attacks by predators.
C) long and slow modification through natural selection.
D) interspecific competition with bees and wasps.
C
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Suppose you carried out two reactions in sequence. In the first reaction you hydrated 1-hexene and in the second reaction you dehydrated the product(s) of the first reaction? Which of the following would be the major final product?
A) 1-hexene B) 2-hexene C) 3-hexene D) none of the above
Determine the Flood Frequency Curve for Cache Creek by plotting the “Recurrence Interval” against “Peak Discharge” on the chart below (note that the Recurrence Interval scale is logarithmic). (Hint: Your plot of data points should form a nearly straight line, so first plot the three largest floods, and then the three smallest—the rest of your points will line up along this trend.) Using a ruler, draw a straight line through the center of your plot, trying to have as many data points below the line as above.
What will be an ideal response?
The windiest place on Earth, on average, is in
A) Colorado. B) southern France. C) southern California. D) New Hampshire. E) Kansas.
The least explosive volcanic eruptions usually come from which type of volcano?
a. calderas b. shield volcanoes c. composite cones d. cinder cones e. plug domes