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Janick McGlynn ∙
EDITED 1/8/16: A contour interval is a the elevation difference between two adjacent contour lines.
Previous person put some ridiculous answer. This one is the correct answer on APEX and does not need improvement.
Earth is three-dimensional, but maps are two-dimensional.
A system is said to be social equilibrium when there is a dynamic working balance among its interdependent parts.
The potential energy of the gasoline is converted to heat and kinetic energy.
remote sensing
energy
less-dense air has a higher temperature
Potential energy to kinetic energy
If you were testing how well different dish soaps cleaned the dishes the control group would be dishes washed in plain water.
Density.
Horizon