What property of alloys make them ideal for developing new materials?
A. The size of the atoms involved is directly related to the electrical conductivity.
B. Alloys are very rigid and are extremely resistant to chemical decomposition.
C. The characteristics of the material change depending on how much of each component is present.
D. all of the above
E. none of the above
Answer: C
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The continental shelf is composed of which material(s)?
A) Granitic crust covered with sedimentary rocks B) Basaltic crust C) Clay sediments and sands D) Ophiolites
Below ground, water moves through soils and rocks by a process known as
A. seepage. B. infiltration. C. discharge. D. percolation.
Attributes of a broad niche could include an organism having
A. a narrow range of foods eaten. B. living in one species of tree. C. a wide range of foods eaten. D. specific feeding times.
Current models of the gasoline-electric car
a. may get up to 30 miles per gallon on the freeway b. get up to 51 miles per gallon c. cannot be used in wet weather d. do not have the ability to climb steep hills e. get up to 35 miles per gallon