Define the three types of rocks
What will be an ideal response?
Sedimentary: deposition and precipitation of products formed by weathering of previously formed rocks.
Igneous: rocks formed from solidification of magma.
Metamorphic rocks: crystalline rocks formed from alteration of previously existing rocks through temperature and pressure.
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In some instances, electromagnetic radiation behaves like a wave. In other instances, electromagnetic radiation behaves more like a particle. Which behavior more accurately describes the true nature of electromagnetic radiation?
A. Electromagnetic radiation behaves as a wave or as a particle depending on the circumstance. B. Wave behavior more accurately describes the true nature of electromagnetic radiation. C. There is no circumstance in which electromagnetic radiation can be described as either portraying particle or wave behavior. D. Particle behavior more accurately describes the true nature of electromagnetic radiation.
Which of the following is formed by the reaction of formic anhydride with ammonia?
A) formamide B) N-methylformamide C) N,N-dimethylformamide D) a mixture of two or more of these compounds
The O horizon, which is found only in some soil profiles, is an oxygen-rich layer.
Answer the following statement true (T) or false (F)
A government could have a high national debt even when a country is home to a large number of wealthy citizens or a growing economy.
a. true b. false