The physical phenomenon that results from the spin of electrons that is found in some solids,
particularly iron, and moving electricity is known as ____________________. The zone around
substances with this property is called a ____________________. Fill in the blank(s) with the appropriate word(s).
magnetism, magnetic field
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Is the parcel of air stable or unstable at the altitude at which it cooled to the dew-point temperature? At 1000 m? At 2000 m? Explain.
What will be an ideal response?
Tolerance limits are ________ that limit a species' survival.
A. Undesirable toxin concentrations B. Population sizes C. Temperature ranges D. Narrow salinity levels E. Any environmental conditions
Recently, geologists have been analyzing ________ generated by tidal friction, ocean waves, and storms to gain an even more detailed image of the crust and upper mantle.
A. ocean currents B. water movement C. light sources D. evaporation E. energy waves
Niagara Falls is a large waterfall on a river, so it can be considered as an example of _______.
a - a rill b - lateral erosion c - a water gap d - a knickpoint e -stream capture