What factors affect the type of dune that forms? What will be an ideal response?
Factors include vegetation coverage, direction and velocity of wind, and the amount of available sand.
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A highly biological productive ocean surface appears chalky; what plankton is likely successful here?
a. Diatoms b. Dinoflagellates c. Coccolithophores d. Isopods
Analyze the above schematic map for an earthquake. Where is the epicenter of the earthquake?
A. Memphis B. Tulsa C. Richmond
The biggest problem with invasive species is that in the new location, they ____.
A. are always bigger than native species B. have no population controls such as predators C. are always stronger than native species D. have higher reproductive rates than native species E. evolve more quickly than native species
The study of paleomagnetism has revealed that
A. the earth's outer core is mostly liquid iron. B. the rocks of the sea floor are less that 200 million years old. C. earth's magnetic field has reversed many times. D. drifting continents follow the earth's magnetic lines of force.