When the Sun is active (e.g. more sunspots and eruptions), the thermosphere increases in size
Indicate whether the statement is true or false
TRUE
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The temperatures in a fractionating tower at an oil refinery are important, but so are the pressures. Where might the pressure in a fractional distillation tower be greatest, at the bottom or at the top? Defend your answer
A) The pressure is greatest at the bottom because the higher temperature means a greater number of vaporized molecules. B) The pressure is greatest at the top because the higher temperature means a greater number of vaporized molecules. C) The pressure is greatest at the bottom because the lower temperature means a greater number of vaporized molecules. D) The pressure is greatest at the top because the lower temperature means a greater number of vaporized molecules.
Much progress in reducing atmospheric levels of lead pollution has resulted from ________
A) the development of new types of batteries that use lithium instead of lead B) new types of lead scrubbers on smokestacks that removed lead from the power plant emissions C) the elimination of leaded gasoline D) the switch from lead to graphite in pencils
The infrared portion of the electromagnetic spectrum carries the most amount of energy
a. True b. False
Climate change and human activity like overgrazing of grasslands is leading to large areas subject to "desertification" where native grass cover dies out during drought periods, exposing soil to erosion
What is potentially the greatest initial soil erosion potential during this type of an event? A) local gullying produced by intermittent rain storms B) loss of topsoil by wind erosion on a large scale C) sand blown in from adjacent deserts D) growth of shrubs shading the ground, further killing the grasses