The multitude of craters that formed on the Earth has been obliterated by erosion and plate tectonics.
Answer the following statement true (T) or false (F)
True
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Examples of smart growth, such as garden cities, have only been tried during the past 30 years.
Answer the following statement true (T) or false (F)
What kind of information can marine microfossils not provide?
A) Temperature variations in the surface and deep water. B) Patterns in ocean circulation C) The orientation of the magnetic poles based on trace metals found within the shells D) Productivity of the marine biosphere and upwelling
How does road construction associated with timber harvesting contribute to landslide hazards?
A) The roads add weight to the hillslope. B) The roads loosen the soil, making shallow soil slips more likely. C) Road construction removes large numbers of trees. D) The roads alter the movement of surface water and groundwater.
Convection currents in the atmosphere are driven by
A. The different temperatures and densities of warm and cold air masses B. The surface winds, which in turn are influenced by the Coriolis effect C. The jet stream dipping down into the troposphere D. Bursts of energy emitted by the ionosphere E. Forces that scientists cannot yet explain