Complex and simple craters have a central peak.
Answer the following statement true (T) or false (F)
False
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An interdependent group of items interacting in a regular way to form a unified whole is a
A) system. B) network. C) toponym. D) hearth.
What is the name given to broken fragments of waste rock removed during mining operations?
a. till b. drift c. regolith d. spoil e. talus
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) Particle behavior more accurately describes the true nature of electromagnetic radiation. B) Electromagnetic radiation behaves both as a wave or as a particle depending on the circumstance. C) Wave behavior more accurately describes the true nature of electromagnetic radiation. D) There is no circumstance in which electromagnetic radiation can be described as either portraying particle or wave behavior.
What percent of the world's energy comes from burning fossil fuels?
a. less than 50% b. 50% to 60% c. 60% to 70% d. 70% to 80% e. more that 80%