Oil spill cleanup techniques are able to recover and remove the majority of spilled oil from the marine environment.
Answer the following statement true (T) or false (F)
False
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An electron de-excites from the fourth quantum level to the third and then directly to the first. Two frequencies of light are emitted. How do their combined energies compare to the energy of the single frequency that would be emitted by de-excitation from the fourth level directly to the first level? The combined energies of the two frequencies emitted by the one electrons is
A. not predictable because other factors, such as the temperature of the surroundings must also be considered. B. equal to the energy of the single frequency. C. greater than the energy of the single frequency. D. less than the energy of the single frequency.
Which of the following describes what an adiabatic chart is useful for determining?
A. isobars B. a station model C. the wind speed D. the lifting condensation level
How are igneous, sedimentary, and metamorphic rocks different?
Though they are called ________, these objects are not really empty space but very, very dense objects, so dense that their gravity pulls nearby material irresistibly in toward them, even light. Some of this material is altered on its way in to this death spiral — and it gives off X-rays in two jets.
A) dark matter B) degenerate matter C) dark energy D) black holes