What is the balance between topography and the thickness and composition of the underlying material?
A. elevation
B. isostasy
C. density
Answer: B
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Which of the following might best explain the reason why electrons are restricted to certain energy levels in an atom?
A. They are travelling at very high speeds. B. They behave like restricted waves and are self-reinforcing. C. They are interacting with the light around the atom. D. They are out of phase and self-destruct when outside of distinct energy regions. E. They behave like chaotic waves of alternating frequency.
____________________ are inefficient because they are expensive to build, they discharge toxic emissions, and they can produce a toxic ash
Fill in the blanks with correct word
When the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) several additional laws were passed to fix problems that arose as a result of enforcing CERCLA. Which of the following statements is correct?
A. Superfund Amendments and Reauthorization Act (SARA) established the innocent landowner defense. B. The Small Business Liability Relief and Brownfields Revitalization Act (SBLRBRA) allowed certain abandoned hazardous waste sites to be developed for a useful purpose. C. The Superfund Amendments and Reauthorization Act (SARA) protected those who purchased land from becoming responsible for unknown hazardous waste sites if they use proper methods of evaluating the property. D. All of these statements are correct. E. None of these statements is correct.
The scientific study of fossils is called ________
A) seismology B) stratigraphy C) petrology D) paleontology