Nanoscience has shown that
A. a physical change can occur when using a scanning probe microscope.
B. the properties of a material can be different on the level of atoms then its properties when the material is analyzed in bulk.
C. a chemical occurs with the use of a scanning probe microscope.
D. DNA is the smallest molecule.
Answer: B
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What is the most commonly used time unit, all of which have corresponding time-stratigraphic units?
a. erathem b. era c. period d. epoch e. eonothem
Environmental policies
A) may be cost-neutral or may come at a monetary cost, depending on the time frame for their evaluation. B) are always expensive, costing consumers and industry more money. C) never have a monetary cost associated with them. D) are paid for by local tax dollars, only indirectly costing most citizens nothing for their implementation.
The majority of Russia's population and its major industries are located __________of the Ural Mountains on the __________.
a. west; Volga River b. east; Coastal Plain c. west; Russian Plain d. west; Moscow Plain e. east; European Plain
Consider an early reef-builder of the Cambrian, the archaeocyathid. Using correct terminology for marine ecosystems,
classify this organism on where it lives, how it gets around, and how it feeds. How does the lifestyle of archeocyathids compare with that of Cambrian trilobites? What will be an ideal response?