genetic drift and migration are mechanisms of evolution bt are not mechanisms of natural selection
a. true
b. false
a. true
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Earth's magnetic field is attributed to the
A. movement of lithospheric plates at Earth's surface. B. movement of lithospheric plates in the outer mantle. C. flow of molten liquid in Earth's inner core. D. flow of molten fluid in Earth's outer core.
You have downloaded a shapefile from a website that shows toxic waste sites in your state. Which operation will you use to get a map showing toxic waste sites within a 10-mile buffer zone map that you have made around your home?
A. Dissolve B. Eliminate C. Erase D. Clip
Identify the components of early Earth’s atmosphere, and explain how it changed to that of present day. What will be an ideal response?
Discuss the social, environmental, and economic consequences behind the modernization of agriculture. How does Latin America's experience with modern agricultural systems compare with North America's?
What will be an ideal response?