Question 1. when the mean value of variation is selected against, selection results.
disrupti...
Question 1. when the mean value of variation is selected against, selection results.
disruptive
directional
stabilizing
no
question 2. punctuated equilibrium refers to:
slow, steady evolution of a small isolated population
rapid and continuous evolution of a population
rapid evolution of a population followed by periods of little change
none of these
question 3. special mating plumage produced by birds during a time of year is an example of:
a reproductive isolating mechanism
winter coloration to blend into the background
as aspect of aging of the birds as they become old and senile
none of these
Answers: 1
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Aplane cuts a pyramid as shown in the diagram. what is the shape of the cross section? a. a hexagon b. a pentagon c. a square d. a triangle
Answers: 1
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Which of the following can scientists estimate geologic time? a. observing rock sequences b. radiometric dating c. comparing fossils d. all of these
Answers: 1
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Select the correct answer from each drop-down menu. this map shows how climate change might affect precipitation patterns in the great plains of the united states by the end of this century. brown shows a decrease in precipitation, and blue shows an increase. the maps differ based on the predicted levels of greenhouse gas emissions. the maps show that northern areas should get . southern areas will likely get . to use these maps to prepare for natural disasters in the great plains, scientists need to ask, ?
Answers: 2
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