The Earth's climate cycles between warmer and colder periods
Indicate whether the statement is true or false
FALSE
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People overpopulation refers to the problem within more developed countries (MDCs) where each person uses a large quantity of natural resources from ecosystems around the world
a. True b. False Indicate whether the statement is true or false
Which of the following is CORRECT about the U.S. soil classification system?
A) The Soil Taxonomy is hierarchical, consisting of six categories from soil series to soil order. B) The soil classification system was finalized in 1975 and no additional changes to it will be made. C) It is primarily based on pedogenic regimes in which each soil-forming process is attached to a climatic region. D) Soil variation is too complex for a single classification system, so many regional classification systems are used within the U.S.
What physically breaks hydrogen bonds between water molecules as ice melts?
-covalent bonds of water molecules -movement of water molecules -mass of water molecules -polarity of water molecules
In 1985, because of the Michoacan earthquake many buildings collapsed and killed about 8,000 people in Mexico City, even though the city lies 350 miles from the epicenter. All but which of the following caused this?
A. Soft lake-sediment foundations B. Improperly designed buildings C. Resonance between seismic waves D. Collapse of thousands of single-story frame houses